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Finding the Fourth Proportional to 315,031.88, 434,737.33 and 171,788.85

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Solution

The fourth proportional to 315,031.88, 434,737.33 and 171,788.85 is: 237,064.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,031.88 : 434,737.33 = 171,788.85 : x
  2. Step 2: Convert to fraction form
    315,031.88/434,737.33 = 171,788.85/x
  3. Step 3: Cross multiply
    315,031.88x = 434,737.33 × 171,788.85
  4. Step 4: Simplify right side
    315,031.88x = 74,683,025,543.30
  5. Step 5: Solve for x
    x = 74,683,025,543.30/315,031.88
  6. Step 6: Final answer
    x = 237,064.98

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.