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Finding the Fourth Proportional to 207,118.86, 285,920.28 and 156,152.22

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Solution

The fourth proportional to 207,118.86, 285,920.28 and 156,152.22 is: 215,562.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,118.86 : 285,920.28 = 156,152.22 : x
  2. Step 2: Convert to fraction form
    207,118.86/285,920.28 = 156,152.22/x
  3. Step 3: Cross multiply
    207,118.86x = 285,920.28 × 156,152.22
  4. Step 4: Simplify right side
    207,118.86x = 44,647,086,465.02
  5. Step 5: Solve for x
    x = 44,647,086,465.02/207,118.86
  6. Step 6: Final answer
    x = 215,562.63

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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.