Home / 315,103,699.70-472,336,684.95-185,644,672.10

Finding the Fourth Proportional to 315,103,699.70, 472,336,684.95 and 185,644,672.10

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Solution

The fourth proportional to 315,103,699.70, 472,336,684.95 and 185,644,672.10 is: 278,279,147.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,103,699.70 : 472,336,684.95 = 185,644,672.10 : x
  2. Step 2: Convert to fraction form
    315,103,699.70/472,336,684.95 = 185,644,672.10/x
  3. Step 3: Cross multiply
    315,103,699.70x = 472,336,684.95 × 185,644,672.10
  4. Step 4: Simplify right side
    315,103,699.70x = 87,686,788,998,343,744
  5. Step 5: Solve for x
    x = 87,686,788,998,343,744/315,103,699.70
  6. Step 6: Final answer
    x = 278,279,147.73

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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.