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Finding the Fourth Proportional to 527,131.77, 790,746.24 and 172,147.65

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Solution

The fourth proportional to 527,131.77, 790,746.24 and 172,147.65 is: 258,237.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    527,131.77 : 790,746.24 = 172,147.65 : x
  2. Step 2: Convert to fraction form
    527,131.77/790,746.24 = 172,147.65/x
  3. Step 3: Cross multiply
    527,131.77x = 790,746.24 × 172,147.65
  4. Step 4: Simplify right side
    527,131.77x = 136,125,106,962.34
  5. Step 5: Solve for x
    x = 136,125,106,962.34/527,131.77
  6. Step 6: Final answer
    x = 258,237.34

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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.