Home / 386,476,859.20-579,267,391.20-156,332,142.40

Finding the Fourth Proportional to 386,476,859.20, 579,267,391.20 and 156,332,142.40

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Solution

The fourth proportional to 386,476,859.20, 579,267,391.20 and 156,332,142.40 is: 234,317,036.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,476,859.20 : 579,267,391.20 = 156,332,142.40 : x
  2. Step 2: Convert to fraction form
    386,476,859.20/579,267,391.20 = 156,332,142.40/x
  3. Step 3: Cross multiply
    386,476,859.20x = 579,267,391.20 × 156,332,142.40
  4. Step 4: Simplify right side
    386,476,859.20x = 90,558,112,288,754,912
  5. Step 5: Solve for x
    x = 90,558,112,288,754,912/386,476,859.20
  6. Step 6: Final answer
    x = 234,317,036.41

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.