Home / 386,367,306.40-533,138,383.92-261,191,790.56

Finding the Fourth Proportional to 386,367,306.40, 533,138,383.92 and 261,191,790.56

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Solution

The fourth proportional to 386,367,306.40, 533,138,383.92 and 261,191,790.56 is: 360,411,884.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,367,306.40 : 533,138,383.92 = 261,191,790.56 : x
  2. Step 2: Convert to fraction form
    386,367,306.40/533,138,383.92 = 261,191,790.56/x
  3. Step 3: Cross multiply
    386,367,306.40x = 533,138,383.92 × 261,191,790.56
  4. Step 4: Simplify right side
    386,367,306.40x = 139,251,369,112,329,520
  5. Step 5: Solve for x
    x = 139,251,369,112,329,520/386,367,306.40
  6. Step 6: Final answer
    x = 360,411,884.77

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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.