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Finding the Fourth Proportional to 375,128.06, 562,691.23 and 289,862.90

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Solution

The fourth proportional to 375,128.06, 562,691.23 and 289,862.90 is: 434,793.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    375,128.06 : 562,691.23 = 289,862.90 : x
  2. Step 2: Convert to fraction form
    375,128.06/562,691.23 = 289,862.90/x
  3. Step 3: Cross multiply
    375,128.06x = 562,691.23 × 289,862.90
  4. Step 4: Simplify right side
    375,128.06x = 163,103,315,099.96
  5. Step 5: Solve for x
    x = 163,103,315,099.96/375,128.06
  6. Step 6: Final answer
    x = 434,793.70

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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.