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Finding the Fourth Proportional to 458,792.37, 688,188.56 and 143,276.31

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Solution

The fourth proportional to 458,792.37, 688,188.56 and 143,276.31 is: 214,914.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,792.37 : 688,188.56 = 143,276.31 : x
  2. Step 2: Convert to fraction form
    458,792.37/688,188.56 = 143,276.31/x
  3. Step 3: Cross multiply
    458,792.37x = 688,188.56 × 143,276.31
  4. Step 4: Simplify right side
    458,792.37x = 98,601,116,744.63
  5. Step 5: Solve for x
    x = 98,601,116,744.63/458,792.37
  6. Step 6: Final answer
    x = 214,914.47

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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.