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Finding the Fourth Proportional to 283,389.92, 425,140.93 and 80,987.84

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Solution

The fourth proportional to 283,389.92, 425,140.93 and 80,987.84 is: 121,497.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,389.92 : 425,140.93 = 80,987.84 : x
  2. Step 2: Convert to fraction form
    283,389.92/425,140.93 = 80,987.84/x
  3. Step 3: Cross multiply
    283,389.92x = 425,140.93 × 80,987.84
  4. Step 4: Simplify right side
    283,389.92x = 34,431,243,490.59
  5. Step 5: Solve for x
    x = 34,431,243,490.59/283,389.92
  6. Step 6: Final answer
    x = 121,497.77

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1.5x scale

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.