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Finding the Fourth Proportional to 478,306.95, 660,068.06 and 263,447.79

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Solution

The fourth proportional to 478,306.95, 660,068.06 and 263,447.79 is: 363,560.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,306.95 : 660,068.06 = 263,447.79 : x
  2. Step 2: Convert to fraction form
    478,306.95/660,068.06 = 263,447.79/x
  3. Step 3: Cross multiply
    478,306.95x = 660,068.06 × 263,447.79
  4. Step 4: Simplify right side
    478,306.95x = 173,893,470,339.35
  5. Step 5: Solve for x
    x = 173,893,470,339.35/478,306.95
  6. Step 6: Final answer
    x = 363,560.41

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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.