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Finding the Fourth Proportional to 210,975,304.80, 316,462,957.20 and 142,100,551.20

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Solution

The fourth proportional to 210,975,304.80, 316,462,957.20 and 142,100,551.20 is: 213,150,826.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,975,304.80 : 316,462,957.20 = 142,100,551.20 : x
  2. Step 2: Convert to fraction form
    210,975,304.80/316,462,957.20 = 142,100,551.20/x
  3. Step 3: Cross multiply
    210,975,304.80x = 316,462,957.20 × 142,100,551.20
  4. Step 4: Simplify right side
    210,975,304.80x = 44,969,560,652,502,000
  5. Step 5: Solve for x
    x = 44,969,560,652,502,000/210,975,304.80
  6. Step 6: Final answer
    x = 213,150,826.80

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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.