Home / 283,143.03-390,737.45-155,818.62

Finding the Fourth Proportional to 283,143.03, 390,737.45 and 155,818.62

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Solution

The fourth proportional to 283,143.03, 390,737.45 and 155,818.62 is: 215,029.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,143.03 : 390,737.45 = 155,818.62 : x
  2. Step 2: Convert to fraction form
    283,143.03/390,737.45 = 155,818.62/x
  3. Step 3: Cross multiply
    283,143.03x = 390,737.45 × 155,818.62
  4. Step 4: Simplify right side
    283,143.03x = 60,884,170,630.87
  5. Step 5: Solve for x
    x = 60,884,170,630.87/283,143.03
  6. Step 6: Final answer
    x = 215,029.74

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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.