Home / 208,211.18-287,331.10-112,717.85

Finding the Fourth Proportional to 208,211.18, 287,331.10 and 112,717.85

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Solution

The fourth proportional to 208,211.18, 287,331.10 and 112,717.85 is: 155,550.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,211.18 : 287,331.10 = 112,717.85 : x
  2. Step 2: Convert to fraction form
    208,211.18/287,331.10 = 112,717.85/x
  3. Step 3: Cross multiply
    208,211.18x = 287,331.10 × 112,717.85
  4. Step 4: Simplify right side
    208,211.18x = 32,387,342,111.68
  5. Step 5: Solve for x
    x = 32,387,342,111.68/208,211.18
  6. Step 6: Final answer
    x = 155,550.45

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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.