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Finding the Fourth Proportional to 315,584.70, 435,510.35 and 172,348.96

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Solution

The fourth proportional to 315,584.70, 435,510.35 and 172,348.96 is: 237,843.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,584.70 : 435,510.35 = 172,348.96 : x
  2. Step 2: Convert to fraction form
    315,584.70/435,510.35 = 172,348.96/x
  3. Step 3: Cross multiply
    315,584.70x = 435,510.35 × 172,348.96
  4. Step 4: Simplify right side
    315,584.70x = 75,059,755,233.83
  5. Step 5: Solve for x
    x = 75,059,755,233.83/315,584.70
  6. Step 6: Final answer
    x = 237,843.45

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1.5x scale

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.