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Finding the Fourth Proportional to 209,166.64, 288,634.80 and 118,524.40

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Solution

The fourth proportional to 209,166.64, 288,634.80 and 118,524.40 is: 163,555.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,166.64 : 288,634.80 = 118,524.40 : x
  2. Step 2: Convert to fraction form
    209,166.64/288,634.80 = 118,524.40/x
  3. Step 3: Cross multiply
    209,166.64x = 288,634.80 × 118,524.40
  4. Step 4: Simplify right side
    209,166.64x = 34,210,266,489.12
  5. Step 5: Solve for x
    x = 34,210,266,489.12/209,166.64
  6. Step 6: Final answer
    x = 163,555.08

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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.