Home / 288,980,621.39-398,793,514.71-156,821,618.27

Finding the Fourth Proportional to 288,980,621.39, 398,793,514.71 and 156,821,618.27

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Solution

The fourth proportional to 288,980,621.39, 398,793,514.71 and 156,821,618.27 is: 216,413,972.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,980,621.39 : 398,793,514.71 = 156,821,618.27 : x
  2. Step 2: Convert to fraction form
    288,980,621.39/398,793,514.71 = 156,821,618.27/x
  3. Step 3: Cross multiply
    288,980,621.39x = 398,793,514.71 × 156,821,618.27
  4. Step 4: Simplify right side
    288,980,621.39x = 62,539,444,332,403,248
  5. Step 5: Solve for x
    x = 62,539,444,332,403,248/288,980,621.39
  6. Step 6: Final answer
    x = 216,413,972.78

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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.