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Finding the Fourth Proportional to 423,422.89, 584,308.47 and 239,657.52

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Solution

The fourth proportional to 423,422.89, 584,308.47 and 239,657.52 is: 330,718.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,422.89 : 584,308.47 = 239,657.52 : x
  2. Step 2: Convert to fraction form
    423,422.89/584,308.47 = 239,657.52/x
  3. Step 3: Cross multiply
    423,422.89x = 584,308.47 × 239,657.52
  4. Step 4: Simplify right side
    423,422.89x = 140,033,915,913.65
  5. Step 5: Solve for x
    x = 140,033,915,913.65/423,422.89
  6. Step 6: Final answer
    x = 330,718.81

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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.