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Finding the Fourth Proportional to 499,528.80, 749,390.40 and 144,554.40

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Solution

The fourth proportional to 499,528.80, 749,390.40 and 144,554.40 is: 216,859.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,528.80 : 749,390.40 = 144,554.40 : x
  2. Step 2: Convert to fraction form
    499,528.80/749,390.40 = 144,554.40/x
  3. Step 3: Cross multiply
    499,528.80x = 749,390.40 × 144,554.40
  4. Step 4: Simplify right side
    499,528.80x = 108,327,679,637.76
  5. Step 5: Solve for x
    x = 108,327,679,637.76/499,528.80
  6. Step 6: Final answer
    x = 216,859.73

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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.