Home / 209,425,613.40-288,998,019.79-120,053,486.88

Finding the Fourth Proportional to 209,425,613.40, 288,998,019.79 and 120,053,486.88

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Solution

The fourth proportional to 209,425,613.40, 288,998,019.79 and 120,053,486.88 is: 165,668,465.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,425,613.40 : 288,998,019.79 = 120,053,486.88 : x
  2. Step 2: Convert to fraction form
    209,425,613.40/288,998,019.79 = 120,053,486.88/x
  3. Step 3: Cross multiply
    209,425,613.40x = 288,998,019.79 × 120,053,486.88
  4. Step 4: Simplify right side
    209,425,613.40x = 34,695,219,976,904,612
  5. Step 5: Solve for x
    x = 34,695,219,976,904,612/209,425,613.40
  6. Step 6: Final answer
    x = 165,668,465.35

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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.