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Finding the Fourth Proportional to 478,283.68, 660,031.44 and 263,421.92

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Solution

The fourth proportional to 478,283.68, 660,031.44 and 263,421.92 is: 363,522.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,283.68 : 660,031.44 = 263,421.92 : x
  2. Step 2: Convert to fraction form
    478,283.68/660,031.44 = 263,421.92/x
  3. Step 3: Cross multiply
    478,283.68x = 660,031.44 × 263,421.92
  4. Step 4: Simplify right side
    478,283.68x = 173,866,749,185.17
  5. Step 5: Solve for x
    x = 173,866,749,185.17/478,283.68
  6. Step 6: Final answer
    x = 363,522.23

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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.