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Finding the Fourth Proportional to 459,010.40, 688,515.60 and 388,151.60

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Solution

The fourth proportional to 459,010.40, 688,515.60 and 388,151.60 is: 582,227.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    459,010.40 : 688,515.60 = 388,151.60 : x
  2. Step 2: Convert to fraction form
    459,010.40/688,515.60 = 388,151.60/x
  3. Step 3: Cross multiply
    459,010.40x = 688,515.60 × 388,151.60
  4. Step 4: Simplify right side
    459,010.40x = 267,248,431,764.96
  5. Step 5: Solve for x
    x = 267,248,431,764.96/459,010.40
  6. Step 6: Final answer
    x = 582,227.40

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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.