Home / 385,367,208.56-531,807,270.36-209,155,209.38

Finding the Fourth Proportional to 385,367,208.56, 531,807,270.36 and 209,155,209.38

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Solution

The fourth proportional to 385,367,208.56, 531,807,270.36 and 209,155,209.38 is: 288,634,472.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,367,208.56 : 531,807,270.36 = 209,155,209.38 : x
  2. Step 2: Convert to fraction form
    385,367,208.56/531,807,270.36 = 209,155,209.38/x
  3. Step 3: Cross multiply
    385,367,208.56x = 531,807,270.36 × 209,155,209.38
  4. Step 4: Simplify right side
    385,367,208.56x = 111,230,260,981,952,064
  5. Step 5: Solve for x
    x = 111,230,260,981,952,064/385,367,208.56
  6. Step 6: Final answer
    x = 288,634,472.55

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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.