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Finding the Fourth Proportional to 283,166.65, 390,755.87 and 155,838.97

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Solution

The fourth proportional to 283,166.65, 390,755.87 and 155,838.97 is: 215,050.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,166.65 : 390,755.87 = 155,838.97 : x
  2. Step 2: Convert to fraction form
    283,166.65/390,755.87 = 155,838.97/x
  3. Step 3: Cross multiply
    283,166.65x = 390,755.87 × 155,838.97
  4. Step 4: Simplify right side
    283,166.65x = 60,894,991,523.06
  5. Step 5: Solve for x
    x = 60,894,991,523.06/283,166.65
  6. Step 6: Final answer
    x = 215,050.01

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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.