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Finding the Fourth Proportional to 347,853.80, 521,391.90 and 148,140.20

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Solution

The fourth proportional to 347,853.80, 521,391.90 and 148,140.20 is: 222,044.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,853.80 : 521,391.90 = 148,140.20 : x
  2. Step 2: Convert to fraction form
    347,853.80/521,391.90 = 148,140.20/x
  3. Step 3: Cross multiply
    347,853.80x = 521,391.90 × 148,140.20
  4. Step 4: Simplify right side
    347,853.80x = 77,239,100,344.38
  5. Step 5: Solve for x
    x = 77,239,100,344.38/347,853.80
  6. Step 6: Final answer
    x = 222,044.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.