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Finding the Fourth Proportional to 615,138.80, 922,967.40 and 334,857.20

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Solution

The fourth proportional to 615,138.80, 922,967.40 and 334,857.20 is: 502,426.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,138.80 : 922,967.40 = 334,857.20 : x
  2. Step 2: Convert to fraction form
    615,138.80/922,967.40 = 334,857.20/x
  3. Step 3: Cross multiply
    615,138.80x = 922,967.40 × 334,857.20
  4. Step 4: Simplify right side
    615,138.80x = 309,062,279,255.28
  5. Step 5: Solve for x
    x = 309,062,279,255.28/615,138.80
  6. Step 6: Final answer
    x = 502,426.90

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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.