Home / 279,488.12-385,674.14-158,631.86

Finding the Fourth Proportional to 279,488.12, 385,674.14 and 158,631.86

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Solution

The fourth proportional to 279,488.12, 385,674.14 and 158,631.86 is: 218,900.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,488.12 : 385,674.14 = 158,631.86 : x
  2. Step 2: Convert to fraction form
    279,488.12/385,674.14 = 158,631.86/x
  3. Step 3: Cross multiply
    279,488.12x = 385,674.14 × 158,631.86
  4. Step 4: Simplify right side
    279,488.12x = 61,180,207,542.87
  5. Step 5: Solve for x
    x = 61,180,207,542.87/279,488.12
  6. Step 6: Final answer
    x = 218,900.93

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1.5x scale

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.