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Finding the Fourth Proportional to 296,439.32, 408,809.90 and 274,421.68

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Solution

The fourth proportional to 296,439.32, 408,809.90 and 274,421.68 is: 378,446.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    296,439.32 : 408,809.90 = 274,421.68 : x
  2. Step 2: Convert to fraction form
    296,439.32/408,809.90 = 274,421.68/x
  3. Step 3: Cross multiply
    296,439.32x = 408,809.90 × 274,421.68
  4. Step 4: Simplify right side
    296,439.32x = 112,186,299,558.63
  5. Step 5: Solve for x
    x = 112,186,299,558.63/296,439.32
  6. Step 6: Final answer
    x = 378,446.08

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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.