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Finding the Fourth Proportional to 458,746.38, 688,119.54 and 143,230.32

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Solution

The fourth proportional to 458,746.38, 688,119.54 and 143,230.32 is: 214,845.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,746.38 : 688,119.54 = 143,230.32 : x
  2. Step 2: Convert to fraction form
    458,746.38/688,119.54 = 143,230.32/x
  3. Step 3: Cross multiply
    458,746.38x = 688,119.54 × 143,230.32
  4. Step 4: Simplify right side
    458,746.38x = 98,559,581,912.45
  5. Step 5: Solve for x
    x = 98,559,581,912.45/458,746.38
  6. Step 6: Final answer
    x = 214,845.47

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Double scale
Find fourth proportional to 458,747.38, 688,121.04 and 143,231.32
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.