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Finding the Fourth Proportional to 499,405.98, 749,130.82 and 144,455.88

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Solution

The fourth proportional to 499,405.98, 749,130.82 and 144,455.88 is: 216,690.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,405.98 : 749,130.82 = 144,455.88 : x
  2. Step 2: Convert to fraction form
    499,405.98/749,130.82 = 144,455.88/x
  3. Step 3: Cross multiply
    499,405.98x = 749,130.82 × 144,455.88
  4. Step 4: Simplify right side
    499,405.98x = 108,216,351,838.22
  5. Step 5: Solve for x
    x = 108,216,351,838.22/499,405.98
  6. Step 6: Final answer
    x = 216,690.14

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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.