Home / 527,129.51-790,742.86-172,145.39

Finding the Fourth Proportional to 527,129.51, 790,742.86 and 172,145.39

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Solution

The fourth proportional to 527,129.51, 790,742.86 and 172,145.39 is: 258,233.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    527,129.51 : 790,742.86 = 172,145.39 : x
  2. Step 2: Convert to fraction form
    527,129.51/790,742.86 = 172,145.39/x
  3. Step 3: Cross multiply
    527,129.51x = 790,742.86 × 172,145.39
  4. Step 4: Simplify right side
    527,129.51x = 136,122,733,640.34
  5. Step 5: Solve for x
    x = 136,122,733,640.34/527,129.51
  6. Step 6: Final answer
    x = 258,233.95

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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.