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Finding the Fourth Proportional to 397,446.32, 548,479.68 and 216,159.68

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Solution

The fourth proportional to 397,446.32, 548,479.68 and 216,159.68 is: 298,302.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,446.32 : 548,479.68 = 216,159.68 : x
  2. Step 2: Convert to fraction form
    397,446.32/548,479.68 = 216,159.68/x
  3. Step 3: Cross multiply
    397,446.32x = 548,479.68 × 216,159.68
  4. Step 4: Simplify right side
    397,446.32x = 118,559,192,115.30
  5. Step 5: Solve for x
    x = 118,559,192,115.30/397,446.32
  6. Step 6: Final answer
    x = 298,302.40

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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.