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Finding the Fourth Proportional to 308,987.83, 426,182.92 and 283,576.11

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Solution

The fourth proportional to 308,987.83, 426,182.92 and 283,576.11 is: 391,132.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,987.83 : 426,182.92 = 283,576.11 : x
  2. Step 2: Convert to fraction form
    308,987.83/426,182.92 = 283,576.11/x
  3. Step 3: Cross multiply
    308,987.83x = 426,182.92 × 283,576.11
  4. Step 4: Simplify right side
    308,987.83x = 120,855,294,602.04
  5. Step 5: Solve for x
    x = 120,855,294,602.04/308,987.83
  6. Step 6: Final answer
    x = 391,132.86

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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.