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Finding the Fourth Proportional to 306,079.71, 459,046.67 and 128,590.17

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Solution

The fourth proportional to 306,079.71, 459,046.67 and 128,590.17 is: 192,854.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,079.71 : 459,046.67 = 128,590.17 : x
  2. Step 2: Convert to fraction form
    306,079.71/459,046.67 = 128,590.17/x
  3. Step 3: Cross multiply
    306,079.71x = 459,046.67 × 128,590.17
  4. Step 4: Simplify right side
    306,079.71x = 59,028,888,690.28
  5. Step 5: Solve for x
    x = 59,028,888,690.28/306,079.71
  6. Step 6: Final answer
    x = 192,854.63

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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.