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Finding the Fourth Proportional to 315,753.05, 435,734.12 and 172,510.02

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Solution

The fourth proportional to 315,753.05, 435,734.12 and 172,510.02 is: 238,061.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,753.05 : 435,734.12 = 172,510.02 : x
  2. Step 2: Convert to fraction form
    315,753.05/435,734.12 = 172,510.02/x
  3. Step 3: Cross multiply
    315,753.05x = 435,734.12 × 172,510.02
  4. Step 4: Simplify right side
    315,753.05x = 75,168,500,893.33
  5. Step 5: Solve for x
    x = 75,168,500,893.33/315,753.05
  6. Step 6: Final answer
    x = 238,061.05

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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.