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Finding the Fourth Proportional to 518,272.47, 715,240.35 and 303,481.71

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Solution

The fourth proportional to 518,272.47, 715,240.35 and 303,481.71 is: 418,819.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,272.47 : 715,240.35 = 303,481.71 : x
  2. Step 2: Convert to fraction form
    518,272.47/715,240.35 = 303,481.71/x
  3. Step 3: Cross multiply
    518,272.47x = 715,240.35 × 303,481.71
  4. Step 4: Simplify right side
    518,272.47x = 217,062,364,479.00
  5. Step 5: Solve for x
    x = 217,062,364,479.00/518,272.47
  6. Step 6: Final answer
    x = 418,819.01

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1.5x scale

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.