Home / 278,975,183.16-384,985,641.51-153,527,379.78

Finding the Fourth Proportional to 278,975,183.16, 384,985,641.51 and 153,527,379.78

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Solution

The fourth proportional to 278,975,183.16, 384,985,641.51 and 153,527,379.78 is: 211,867,722.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,975,183.16 : 384,985,641.51 = 153,527,379.78 : x
  2. Step 2: Convert to fraction form
    278,975,183.16/384,985,641.51 = 153,527,379.78/x
  3. Step 3: Cross multiply
    278,975,183.16x = 384,985,641.51 × 153,527,379.78
  4. Step 4: Simplify right side
    278,975,183.16x = 59,105,836,793,952,704
  5. Step 5: Solve for x
    x = 59,105,836,793,952,704/278,975,183.16
  6. Step 6: Final answer
    x = 211,867,722.87

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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.