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Finding the Fourth Proportional to 306,559.65, 423,089.15 and 185,697.39

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Solution

The fourth proportional to 306,559.65, 423,089.15 and 185,697.39 is: 256,284.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,559.65 : 423,089.15 = 185,697.39 : x
  2. Step 2: Convert to fraction form
    306,559.65/423,089.15 = 185,697.39/x
  3. Step 3: Cross multiply
    306,559.65x = 423,089.15 × 185,697.39
  4. Step 4: Simplify right side
    306,559.65x = 78,566,549,963.83
  5. Step 5: Solve for x
    x = 78,566,549,963.83/306,559.65
  6. Step 6: Final answer
    x = 256,284.71

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.