Home / 310,432.40-428,432.24-172,625.12

Finding the Fourth Proportional to 310,432.40, 428,432.24 and 172,625.12

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Solution

The fourth proportional to 310,432.40, 428,432.24 and 172,625.12 is: 238,242.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,432.40 : 428,432.24 = 172,625.12 : x
  2. Step 2: Convert to fraction form
    310,432.40/428,432.24 = 172,625.12/x
  3. Step 3: Cross multiply
    310,432.40x = 428,432.24 × 172,625.12
  4. Step 4: Simplify right side
    310,432.40x = 73,958,166,841.87
  5. Step 5: Solve for x
    x = 73,958,166,841.87/310,432.40
  6. Step 6: Final answer
    x = 238,242.42

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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.