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Finding the Fourth Proportional to 518,868.87, 778,326.53 and 159,013.68

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Solution

The fourth proportional to 518,868.87, 778,326.53 and 159,013.68 is: 238,527.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,868.87 : 778,326.53 = 159,013.68 : x
  2. Step 2: Convert to fraction form
    518,868.87/778,326.53 = 159,013.68/x
  3. Step 3: Cross multiply
    518,868.87x = 778,326.53 × 159,013.68
  4. Step 4: Simplify right side
    518,868.87x = 123,764,564,981.86
  5. Step 5: Solve for x
    x = 123,764,564,981.86/518,868.87
  6. Step 6: Final answer
    x = 238,527.64

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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.