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Finding the Fourth Proportional to 347,671.50, 521,726.64 and 147,991.58

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Solution

The fourth proportional to 347,671.50, 521,726.64 and 147,991.58 is: 222,080.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,671.50 : 521,726.64 = 147,991.58 : x
  2. Step 2: Convert to fraction form
    347,671.50/521,726.64 = 147,991.58/x
  3. Step 3: Cross multiply
    347,671.50x = 521,726.64 × 147,991.58
  4. Step 4: Simplify right side
    347,671.50x = 77,211,149,781.69
  5. Step 5: Solve for x
    x = 77,211,149,781.69/347,671.50
  6. Step 6: Final answer
    x = 222,080.76

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.