Home / 347,920.80-521,492.40-148,207.20

Finding the Fourth Proportional to 347,920.80, 521,492.40 and 148,207.20

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Solution

The fourth proportional to 347,920.80, 521,492.40 and 148,207.20 is: 222,145.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,920.80 : 521,492.40 = 148,207.20 : x
  2. Step 2: Convert to fraction form
    347,920.80/521,492.40 = 148,207.20/x
  3. Step 3: Cross multiply
    347,920.80x = 521,492.40 × 148,207.20
  4. Step 4: Simplify right side
    347,920.80x = 77,288,928,425.28
  5. Step 5: Solve for x
    x = 77,288,928,425.28/347,920.80
  6. Step 6: Final answer
    x = 222,145.18

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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.