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Finding the Fourth Proportional to 499,478.90, 749,218.35 and 162,551.30

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Solution

The fourth proportional to 499,478.90, 749,218.35 and 162,551.30 is: 243,826.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,478.90 : 749,218.35 = 162,551.30 : x
  2. Step 2: Convert to fraction form
    499,478.90/749,218.35 = 162,551.30/x
  3. Step 3: Cross multiply
    499,478.90x = 749,218.35 × 162,551.30
  4. Step 4: Simplify right side
    499,478.90x = 121,786,416,776.36
  5. Step 5: Solve for x
    x = 121,786,416,776.36/499,478.90
  6. Step 6: Final answer
    x = 243,826.95

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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.