Home / 372,359,171.12-513,855,631.79-215,817,079.86

Finding the Fourth Proportional to 372,359,171.12, 513,855,631.79 and 215,817,079.86

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Solution

The fourth proportional to 372,359,171.12, 513,855,631.79 and 215,817,079.86 is: 297,827,556.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,359,171.12 : 513,855,631.79 = 215,817,079.86 : x
  2. Step 2: Convert to fraction form
    372,359,171.12/513,855,631.79 = 215,817,079.86/x
  3. Step 3: Cross multiply
    372,359,171.12x = 513,855,631.79 × 215,817,079.86
  4. Step 4: Simplify right side
    372,359,171.12x = 110,898,821,922,263,424
  5. Step 5: Solve for x
    x = 110,898,821,922,263,424/372,359,171.12
  6. Step 6: Final answer
    x = 297,827,556.09

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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.