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Finding the Fourth Proportional to 499,987.70, 749,908.65 and 144,964.70

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Solution

The fourth proportional to 499,987.70, 749,908.65 and 144,964.70 is: 217,425.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,987.70 : 749,908.65 = 144,964.70 : x
  2. Step 2: Convert to fraction form
    499,987.70/749,908.65 = 144,964.70/x
  3. Step 3: Cross multiply
    499,987.70x = 749,908.65 × 144,964.70
  4. Step 4: Simplify right side
    499,987.70x = 108,710,282,474.66
  5. Step 5: Solve for x
    x = 108,710,282,474.66/499,987.70
  6. Step 6: Final answer
    x = 217,425.91

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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.