Home / 387,950,930.71-535,364,695.60-211,740,189.43

Finding the Fourth Proportional to 387,950,930.71, 535,364,695.60 and 211,740,189.43

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Solution

The fourth proportional to 387,950,930.71, 535,364,695.60 and 211,740,189.43 is: 292,197,319.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,950,930.71 : 535,364,695.60 = 211,740,189.43 : x
  2. Step 2: Convert to fraction form
    387,950,930.71/535,364,695.60 = 211,740,189.43/x
  3. Step 3: Cross multiply
    387,950,930.71x = 535,364,695.60 × 211,740,189.43
  4. Step 4: Simplify right side
    387,950,930.71x = 113,358,222,060,478,304
  5. Step 5: Solve for x
    x = 113,358,222,060,478,304/387,950,930.71
  6. Step 6: Final answer
    x = 292,197,319.52

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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.