Home / 347,754,920.80-521,632,381.20-321,478,261.60

Finding the Fourth Proportional to 347,754,920.80, 521,632,381.20 and 321,478,261.60

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Solution

The fourth proportional to 347,754,920.80, 521,632,381.20 and 321,478,261.60 is: 482,217,392.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,754,920.80 : 521,632,381.20 = 321,478,261.60 : x
  2. Step 2: Convert to fraction form
    347,754,920.80/521,632,381.20 = 321,478,261.60/x
  3. Step 3: Cross multiply
    347,754,920.80x = 521,632,381.20 × 321,478,261.60
  4. Step 4: Simplify right side
    347,754,920.80x = 167,693,471,102,444,544
  5. Step 5: Solve for x
    x = 167,693,471,102,444,544/347,754,920.80
  6. Step 6: Final answer
    x = 482,217,392.40

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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.