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Finding the Fourth Proportional to 478,312.55, 660,071.28 and 263,452.62

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Solution

The fourth proportional to 478,312.55, 660,071.28 and 263,452.62 is: 363,564.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,312.55 : 660,071.28 = 263,452.62 : x
  2. Step 2: Convert to fraction form
    478,312.55/660,071.28 = 263,452.62/x
  3. Step 3: Cross multiply
    478,312.55x = 660,071.28 × 263,452.62
  4. Step 4: Simplify right side
    478,312.55x = 173,897,508,102.75
  5. Step 5: Solve for x
    x = 173,897,508,102.75/478,312.55
  6. Step 6: Final answer
    x = 363,564.59

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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.