Home / 215,985,501.66-298,098,791.52-121,928,317.86

Finding the Fourth Proportional to 215,985,501.66, 298,098,791.52 and 121,928,317.86

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Solution

The fourth proportional to 215,985,501.66, 298,098,791.52 and 121,928,317.86 is: 168,282,981.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,985,501.66 : 298,098,791.52 = 121,928,317.86 : x
  2. Step 2: Convert to fraction form
    215,985,501.66/298,098,791.52 = 121,928,317.86/x
  3. Step 3: Cross multiply
    215,985,501.66x = 298,098,791.52 × 121,928,317.86
  4. Step 4: Simplify right side
    215,985,501.66x = 36,346,684,206,132,432
  5. Step 5: Solve for x
    x = 36,346,684,206,132,432/215,985,501.66
  6. Step 6: Final answer
    x = 168,282,981.62

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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.