Home / 425,348,981.40-638,023,472.10-272,168,002.20

Finding the Fourth Proportional to 425,348,981.40, 638,023,472.10 and 272,168,002.20

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Solution

The fourth proportional to 425,348,981.40, 638,023,472.10 and 272,168,002.20 is: 408,252,003.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,348,981.40 : 638,023,472.10 = 272,168,002.20 : x
  2. Step 2: Convert to fraction form
    425,348,981.40/638,023,472.10 = 272,168,002.20/x
  3. Step 3: Cross multiply
    425,348,981.40x = 638,023,472.10 × 272,168,002.20
  4. Step 4: Simplify right side
    425,348,981.40x = 173,649,573,758,164,448
  5. Step 5: Solve for x
    x = 173,649,573,758,164,448/425,348,981.40
  6. Step 6: Final answer
    x = 408,252,003.30

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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.