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Finding the Fourth Proportional to 709,304.80, 1,063,957.20 and 210,668.80

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Solution

The fourth proportional to 709,304.80, 1,063,957.20 and 210,668.80 is: 316,003.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,304.80 : 1,063,957.20 = 210,668.80 : x
  2. Step 2: Convert to fraction form
    709,304.80/1,063,957.20 = 210,668.80/x
  3. Step 3: Cross multiply
    709,304.80x = 1,063,957.20 × 210,668.80
  4. Step 4: Simplify right side
    709,304.80x = 224,142,586,575.36
  5. Step 5: Solve for x
    x = 224,142,586,575.36/709,304.80
  6. Step 6: Final answer
    x = 316,003.20

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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.