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Finding the Fourth Proportional to 557,337.75, 769,173.53 and 315,663.31

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Solution

The fourth proportional to 557,337.75, 769,173.53 and 315,663.31 is: 435,642.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,337.75 : 769,173.53 = 315,663.31 : x
  2. Step 2: Convert to fraction form
    557,337.75/769,173.53 = 315,663.31/x
  3. Step 3: Cross multiply
    557,337.75x = 769,173.53 × 315,663.31
  4. Step 4: Simplify right side
    557,337.75x = 242,799,862,444.18
  5. Step 5: Solve for x
    x = 242,799,862,444.18/557,337.75
  6. Step 6: Final answer
    x = 435,642.23

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.