Home / 458,669.70-688,004.55-143,085.60

Finding the Fourth Proportional to 458,669.70, 688,004.55 and 143,085.60

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Solution

The fourth proportional to 458,669.70, 688,004.55 and 143,085.60 is: 214,628.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,669.70 : 688,004.55 = 143,085.60 : x
  2. Step 2: Convert to fraction form
    458,669.70/688,004.55 = 143,085.60/x
  3. Step 3: Cross multiply
    458,669.70x = 688,004.55 × 143,085.60
  4. Step 4: Simplify right side
    458,669.70x = 98,443,543,839.48
  5. Step 5: Solve for x
    x = 98,443,543,839.48/458,669.70
  6. Step 6: Final answer
    x = 214,628.40

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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.