Home / 288,387,951.73-398,503,280.39-209,935,302.71

Finding the Fourth Proportional to 288,387,951.73, 398,503,280.39 and 209,935,302.71

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Solution

The fourth proportional to 288,387,951.73, 398,503,280.39 and 209,935,302.71 is: 290,095,013.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,387,951.73 : 398,503,280.39 = 209,935,302.71 : x
  2. Step 2: Convert to fraction form
    288,387,951.73/398,503,280.39 = 209,935,302.71/x
  3. Step 3: Cross multiply
    288,387,951.73x = 398,503,280.39 × 209,935,302.71
  4. Step 4: Simplify right side
    288,387,951.73x = 83,659,906,798,800,048
  5. Step 5: Solve for x
    x = 83,659,906,798,800,048/288,387,951.73
  6. Step 6: Final answer
    x = 290,095,013.66

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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.