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Finding the Fourth Proportional to 283,143.27, 390,737.48 and 155,818.86

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Solution

The fourth proportional to 283,143.27, 390,737.48 and 155,818.86 is: 215,029.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,143.27 : 390,737.48 = 155,818.86 : x
  2. Step 2: Convert to fraction form
    283,143.27/390,737.48 = 155,818.86/x
  3. Step 3: Cross multiply
    283,143.27x = 390,737.48 × 155,818.86
  4. Step 4: Simplify right side
    283,143.27x = 60,884,270,059.26
  5. Step 5: Solve for x
    x = 60,884,270,059.26/283,143.27
  6. Step 6: Final answer
    x = 215,029.91

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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.