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Finding the Fourth Proportional to 210,946.65, 316,444.52 and 74,127.70

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Solution

The fourth proportional to 210,946.65, 316,444.52 and 74,127.70 is: 111,200.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,946.65 : 316,444.52 = 74,127.70 : x
  2. Step 2: Convert to fraction form
    210,946.65/316,444.52 = 74,127.70/x
  3. Step 3: Cross multiply
    210,946.65x = 316,444.52 × 74,127.70
  4. Step 4: Simplify right side
    210,946.65x = 23,457,304,445.20
  5. Step 5: Solve for x
    x = 23,457,304,445.20/210,946.65
  6. Step 6: Final answer
    x = 111,200.18

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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.