Home / 283,325.18-390,987.86-156,000.80

Finding the Fourth Proportional to 283,325.18, 390,987.86 and 156,000.80

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Solution

The fourth proportional to 283,325.18, 390,987.86 and 156,000.80 is: 215,280.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,325.18 : 390,987.86 = 156,000.80 : x
  2. Step 2: Convert to fraction form
    283,325.18/390,987.86 = 156,000.80/x
  3. Step 3: Cross multiply
    283,325.18x = 390,987.86 × 156,000.80
  4. Step 4: Simplify right side
    283,325.18x = 60,994,418,950.29
  5. Step 5: Solve for x
    x = 60,994,418,950.29/283,325.18
  6. Step 6: Final answer
    x = 215,280.61

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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.