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Finding the Fourth Proportional to 615,108.40, 922,489.80 and 194,513.20

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Solution

The fourth proportional to 615,108.40, 922,489.80 and 194,513.20 is: 291,715.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,108.40 : 922,489.80 = 194,513.20 : x
  2. Step 2: Convert to fraction form
    615,108.40/922,489.80 = 194,513.20/x
  3. Step 3: Cross multiply
    615,108.40x = 922,489.80 × 194,513.20
  4. Step 4: Simplify right side
    615,108.40x = 179,436,442,965.36
  5. Step 5: Solve for x
    x = 179,436,442,965.36/615,108.40
  6. Step 6: Final answer
    x = 291,715.16

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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.