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Finding the Fourth Proportional to 316,618.47, 474,924.06 and 127,127.07

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Solution

The fourth proportional to 316,618.47, 474,924.06 and 127,127.07 is: 190,689.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,618.47 : 474,924.06 = 127,127.07 : x
  2. Step 2: Convert to fraction form
    316,618.47/474,924.06 = 127,127.07/x
  3. Step 3: Cross multiply
    316,618.47x = 474,924.06 × 127,127.07
  4. Step 4: Simplify right side
    316,618.47x = 60,375,704,220.30
  5. Step 5: Solve for x
    x = 60,375,704,220.30/316,618.47
  6. Step 6: Final answer
    x = 190,689.14

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1.5x scale

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.