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Finding the Fourth Proportional to 518,751.17, 715,931.65 and 304,071.60

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Solution

The fourth proportional to 518,751.17, 715,931.65 and 304,071.60 is: 419,651.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,751.17 : 715,931.65 = 304,071.60 : x
  2. Step 2: Convert to fraction form
    518,751.17/715,931.65 = 304,071.60/x
  3. Step 3: Cross multiply
    518,751.17x = 715,931.65 × 304,071.60
  4. Step 4: Simplify right side
    518,751.17x = 217,694,480,785.78
  5. Step 5: Solve for x
    x = 217,694,480,785.78/518,751.17
  6. Step 6: Final answer
    x = 419,651.07

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.