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Finding the Fourth Proportional to 621,703.04, 932,554.50 and 172,423.90

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Solution

The fourth proportional to 621,703.04, 932,554.50 and 172,423.90 is: 258,635.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,703.04 : 932,554.50 = 172,423.90 : x
  2. Step 2: Convert to fraction form
    621,703.04/932,554.50 = 172,423.90/x
  3. Step 3: Cross multiply
    621,703.04x = 932,554.50 × 172,423.90
  4. Step 4: Simplify right side
    621,703.04x = 160,794,681,952.22
  5. Step 5: Solve for x
    x = 160,794,681,952.22/621,703.04
  6. Step 6: Final answer
    x = 258,635.83

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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.