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Finding the Fourth Proportional to 283,165.92, 390,768.72 and 155,841.60

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Solution

The fourth proportional to 283,165.92, 390,768.72 and 155,841.60 is: 215,061.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,165.92 : 390,768.72 = 155,841.60 : x
  2. Step 2: Convert to fraction form
    283,165.92/390,768.72 = 155,841.60/x
  3. Step 3: Cross multiply
    283,165.92x = 390,768.72 × 155,841.60
  4. Step 4: Simplify right side
    283,165.92x = 60,898,022,554.75
  5. Step 5: Solve for x
    x = 60,898,022,554.75/283,165.92
  6. Step 6: Final answer
    x = 215,061.27

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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.