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Finding the Fourth Proportional to 519,006.64, 778,406.28 and 145,032.88

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Solution

The fourth proportional to 519,006.64, 778,406.28 and 145,032.88 is: 217,520.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,006.64 : 778,406.28 = 145,032.88 : x
  2. Step 2: Convert to fraction form
    519,006.64/778,406.28 = 145,032.88/x
  3. Step 3: Cross multiply
    519,006.64x = 778,406.28 × 145,032.88
  4. Step 4: Simplify right side
    519,006.64x = 112,894,504,598.49
  5. Step 5: Solve for x
    x = 112,894,504,598.49/519,006.64
  6. Step 6: Final answer
    x = 217,520.35

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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.