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Finding the Fourth Proportional to 315,737.90, 435,718.64 and 172,500.33

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Solution

The fourth proportional to 315,737.90, 435,718.64 and 172,500.33 is: 238,050.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,737.90 : 435,718.64 = 172,500.33 : x
  2. Step 2: Convert to fraction form
    315,737.90/435,718.64 = 172,500.33/x
  3. Step 3: Cross multiply
    315,737.90x = 435,718.64 × 172,500.33
  4. Step 4: Simplify right side
    315,737.90x = 75,161,611,252.35
  5. Step 5: Solve for x
    x = 75,161,611,252.35/315,737.90
  6. Step 6: Final answer
    x = 238,050.65

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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.