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Finding the Fourth Proportional to 615,013.88, 922,931.22 and 215,654.36

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Solution

The fourth proportional to 615,013.88, 922,931.22 and 215,654.36 is: 323,625.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,013.88 : 922,931.22 = 215,654.36 : x
  2. Step 2: Convert to fraction form
    615,013.88/922,931.22 = 215,654.36/x
  3. Step 3: Cross multiply
    615,013.88x = 922,931.22 × 215,654.36
  4. Step 4: Simplify right side
    615,013.88x = 199,034,141,573.12
  5. Step 5: Solve for x
    x = 199,034,141,573.12/615,013.88
  6. Step 6: Final answer
    x = 323,625.45

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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.