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Finding the Fourth Proportional to 486,612.04, 729,956.40 and 171,139.72

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Solution

The fourth proportional to 486,612.04, 729,956.40 and 171,139.72 is: 256,723.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,612.04 : 729,956.40 = 171,139.72 : x
  2. Step 2: Convert to fraction form
    486,612.04/729,956.40 = 171,139.72/x
  3. Step 3: Cross multiply
    486,612.04x = 729,956.40 × 171,139.72
  4. Step 4: Simplify right side
    486,612.04x = 124,924,533,908.21
  5. Step 5: Solve for x
    x = 124,924,533,908.21/486,612.04
  6. Step 6: Final answer
    x = 256,723.06

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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.