Home / 385,988,408.06-532,668,117.13-209,776,412.66

Finding the Fourth Proportional to 385,988,408.06, 532,668,117.13 and 209,776,412.66

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Solution

The fourth proportional to 385,988,408.06, 532,668,117.13 and 209,776,412.66 is: 289,493,685.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,988,408.06 : 532,668,117.13 = 209,776,412.66 : x
  2. Step 2: Convert to fraction form
    385,988,408.06/532,668,117.13 = 209,776,412.66/x
  3. Step 3: Cross multiply
    385,988,408.06x = 532,668,117.13 × 209,776,412.66
  4. Step 4: Simplify right side
    385,988,408.06x = 111,741,206,746,696,112
  5. Step 5: Solve for x
    x = 111,741,206,746,696,112/385,988,408.06
  6. Step 6: Final answer
    x = 289,493,685.34

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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.