Home / 315,274.31-435,089.05-172,042.21

Finding the Fourth Proportional to 315,274.31, 435,089.05 and 172,042.21

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Solution

The fourth proportional to 315,274.31, 435,089.05 and 172,042.21 is: 237,423.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,274.31 : 435,089.05 = 172,042.21 : x
  2. Step 2: Convert to fraction form
    315,274.31/435,089.05 = 172,042.21/x
  3. Step 3: Cross multiply
    315,274.31x = 435,089.05 × 172,042.21
  4. Step 4: Simplify right side
    315,274.31x = 74,853,681,708.80
  5. Step 5: Solve for x
    x = 74,853,681,708.80/315,274.31
  6. Step 6: Final answer
    x = 237,423.98

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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.