Home / 209,209.12-288,701.52-119,767.84

Finding the Fourth Proportional to 209,209.12, 288,701.52 and 119,767.84

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Solution

The fourth proportional to 209,209.12, 288,701.52 and 119,767.84 is: 165,275.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,209.12 : 288,701.52 = 119,767.84 : x
  2. Step 2: Convert to fraction form
    209,209.12/288,701.52 = 119,767.84/x
  3. Step 3: Cross multiply
    209,209.12x = 288,701.52 × 119,767.84
  4. Step 4: Simplify right side
    209,209.12x = 34,577,157,455.12
  5. Step 5: Solve for x
    x = 34,577,157,455.12/209,209.12
  6. Step 6: Final answer
    x = 165,275.57

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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.