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Finding the Fourth Proportional to 452,630.47, 679,019.19 and 153,129.28

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Solution

The fourth proportional to 452,630.47, 679,019.19 and 153,129.28 is: 229,718.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    452,630.47 : 679,019.19 = 153,129.28 : x
  2. Step 2: Convert to fraction form
    452,630.47/679,019.19 = 153,129.28/x
  3. Step 3: Cross multiply
    452,630.47x = 679,019.19 × 153,129.28
  4. Step 4: Simplify right side
    452,630.47x = 103,977,715,510.14
  5. Step 5: Solve for x
    x = 103,977,715,510.14/452,630.47
  6. Step 6: Final answer
    x = 229,718.77

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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.