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Finding the Fourth Proportional to 478,348.80, 660,113.28 and 263,508.96

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Solution

The fourth proportional to 478,348.80, 660,113.28 and 263,508.96 is: 363,637.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,348.80 : 660,113.28 = 263,508.96 : x
  2. Step 2: Convert to fraction form
    478,348.80/660,113.28 = 263,508.96/x
  3. Step 3: Cross multiply
    478,348.80x = 660,113.28 × 263,508.96
  4. Step 4: Simplify right side
    478,348.80x = 173,945,763,894.99
  5. Step 5: Solve for x
    x = 173,945,763,894.99/478,348.80
  6. Step 6: Final answer
    x = 363,637.92

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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.