Home / 391,223,513.54-539,900,598.36-215,008,306.76

Finding the Fourth Proportional to 391,223,513.54, 539,900,598.36 and 215,008,306.76

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Solution

The fourth proportional to 391,223,513.54, 539,900,598.36 and 215,008,306.76 is: 296,718,140.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,223,513.54 : 539,900,598.36 = 215,008,306.76 : x
  2. Step 2: Convert to fraction form
    391,223,513.54/539,900,598.36 = 215,008,306.76/x
  3. Step 3: Cross multiply
    391,223,513.54x = 539,900,598.36 × 215,008,306.76
  4. Step 4: Simplify right side
    391,223,513.54x = 116,083,113,472,094,432
  5. Step 5: Solve for x
    x = 116,083,113,472,094,432/391,223,513.54
  6. Step 6: Final answer
    x = 296,718,140.54

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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.