Home / 385,604,469.38-532,132,240.56-209,390,895.56

Finding the Fourth Proportional to 385,604,469.38, 532,132,240.56 and 209,390,895.56

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Solution

The fourth proportional to 385,604,469.38, 532,132,240.56 and 209,390,895.56 is: 288,958,389.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,604,469.38 : 532,132,240.56 = 209,390,895.56 : x
  2. Step 2: Convert to fraction form
    385,604,469.38/532,132,240.56 = 209,390,895.56/x
  3. Step 3: Cross multiply
    385,604,469.38x = 532,132,240.56 × 209,390,895.56
  4. Step 4: Simplify right side
    385,604,469.38x = 111,423,646,407,207,760
  5. Step 5: Solve for x
    x = 111,423,646,407,207,760/385,604,469.38
  6. Step 6: Final answer
    x = 288,958,389.37

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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.