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Finding the Fourth Proportional to 458,285.68, 687,264.47 and 158,685.80

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Solution

The fourth proportional to 458,285.68, 687,264.47 and 158,685.80 is: 237,971.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,285.68 : 687,264.47 = 158,685.80 : x
  2. Step 2: Convert to fraction form
    458,285.68/687,264.47 = 158,685.80/x
  3. Step 3: Cross multiply
    458,285.68x = 687,264.47 × 158,685.80
  4. Step 4: Simplify right side
    458,285.68x = 109,059,112,233.53
  5. Step 5: Solve for x
    x = 109,059,112,233.53/458,285.68
  6. Step 6: Final answer
    x = 237,971.90

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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.