Home / 215,985,502.65-298,098,792.90-121,928,318.85

Finding the Fourth Proportional to 215,985,502.65, 298,098,792.90 and 121,928,318.85

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Solution

The fourth proportional to 215,985,502.65, 298,098,792.90 and 121,928,318.85 is: 168,282,982.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,985,502.65 : 298,098,792.90 = 121,928,318.85 : x
  2. Step 2: Convert to fraction form
    215,985,502.65/298,098,792.90 = 121,928,318.85/x
  3. Step 3: Cross multiply
    215,985,502.65x = 298,098,792.90 × 121,928,318.85
  4. Step 4: Simplify right side
    215,985,502.65x = 36,346,684,669,511,312
  5. Step 5: Solve for x
    x = 36,346,684,669,511,312/215,985,502.65
  6. Step 6: Final answer
    x = 168,282,982.99

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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.