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Finding the Fourth Proportional to 519,045.72, 778,529.70 and 145,097.88

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Solution

The fourth proportional to 519,045.72, 778,529.70 and 145,097.88 is: 217,635.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,045.72 : 778,529.70 = 145,097.88 : x
  2. Step 2: Convert to fraction form
    519,045.72/778,529.70 = 145,097.88/x
  3. Step 3: Cross multiply
    519,045.72x = 778,529.70 × 145,097.88
  4. Step 4: Simplify right side
    519,045.72x = 112,963,008,987.04
  5. Step 5: Solve for x
    x = 112,963,008,987.04/519,045.72
  6. Step 6: Final answer
    x = 217,635.95

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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.