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Finding the Fourth Proportional to 312,920.16, 469,379.28 and 270,674.64

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Solution

The fourth proportional to 312,920.16, 469,379.28 and 270,674.64 is: 406,011.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,920.16 : 469,379.28 = 270,674.64 : x
  2. Step 2: Convert to fraction form
    312,920.16/469,379.28 = 270,674.64/x
  3. Step 3: Cross multiply
    312,920.16x = 469,379.28 × 270,674.64
  4. Step 4: Simplify right side
    312,920.16x = 127,049,067,637.46
  5. Step 5: Solve for x
    x = 127,049,067,637.46/312,920.16
  6. Step 6: Final answer
    x = 406,011.13

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1.5x scale

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.