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Finding the Fourth Proportional to 208,888.80, 288,267.18 and 113,395.60

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Solution

The fourth proportional to 208,888.80, 288,267.18 and 113,395.60 is: 156,486.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,888.80 : 288,267.18 = 113,395.60 : x
  2. Step 2: Convert to fraction form
    208,888.80/288,267.18 = 113,395.60/x
  3. Step 3: Cross multiply
    208,888.80x = 288,267.18 × 113,395.60
  4. Step 4: Simplify right side
    208,888.80x = 32,688,229,836.41
  5. Step 5: Solve for x
    x = 32,688,229,836.41/208,888.80
  6. Step 6: Final answer
    x = 156,486.27

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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.