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Finding the Fourth Proportional to 615,136.40, 922,704.60 and 344,987.23

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Solution

The fourth proportional to 615,136.40, 922,704.60 and 344,987.23 is: 517,480.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,136.40 : 922,704.60 = 344,987.23 : x
  2. Step 2: Convert to fraction form
    615,136.40/922,704.60 = 344,987.23/x
  3. Step 3: Cross multiply
    615,136.40x = 922,704.60 × 344,987.23
  4. Step 4: Simplify right side
    615,136.40x = 318,321,304,062.26
  5. Step 5: Solve for x
    x = 318,321,304,062.26/615,136.40
  6. Step 6: Final answer
    x = 517,480.85

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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.