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Finding the Fourth Proportional to 319,419.92, 440,718.36 and 234,389.36

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Solution

The fourth proportional to 319,419.92, 440,718.36 and 234,389.36 is: 323,397.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,419.92 : 440,718.36 = 234,389.36 : x
  2. Step 2: Convert to fraction form
    319,419.92/440,718.36 = 234,389.36/x
  3. Step 3: Cross multiply
    319,419.92x = 440,718.36 × 234,389.36
  4. Step 4: Simplify right side
    319,419.92x = 103,299,694,340.65
  5. Step 5: Solve for x
    x = 103,299,694,340.65/319,419.92
  6. Step 6: Final answer
    x = 323,397.78

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1.5x scale

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.