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Finding the Fourth Proportional to 499,004.64, 688,611.12 and 272,649.84

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Solution

The fourth proportional to 499,004.64, 688,611.12 and 272,649.84 is: 376,248.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,004.64 : 688,611.12 = 272,649.84 : x
  2. Step 2: Convert to fraction form
    499,004.64/688,611.12 = 272,649.84/x
  3. Step 3: Cross multiply
    499,004.64x = 688,611.12 × 272,649.84
  4. Step 4: Simplify right side
    499,004.64x = 187,749,711,690.22
  5. Step 5: Solve for x
    x = 187,749,711,690.22/499,004.64
  6. Step 6: Final answer
    x = 376,248.43

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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.