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Finding the Fourth Proportional to 499,248.80, 748,873.20 and 219,312.80

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Solution

The fourth proportional to 499,248.80, 748,873.20 and 219,312.80 is: 328,969.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,248.80 : 748,873.20 = 219,312.80 : x
  2. Step 2: Convert to fraction form
    499,248.80/748,873.20 = 219,312.80/x
  3. Step 3: Cross multiply
    499,248.80x = 748,873.20 × 219,312.80
  4. Step 4: Simplify right side
    499,248.80x = 164,237,478,336.96
  5. Step 5: Solve for x
    x = 164,237,478,336.96/499,248.80
  6. Step 6: Final answer
    x = 328,969.20

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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.