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Finding the Fourth Proportional to 316,903.32, 475,356.08 and 80,245.92

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Solution

The fourth proportional to 316,903.32, 475,356.08 and 80,245.92 is: 120,369.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,903.32 : 475,356.08 = 80,245.92 : x
  2. Step 2: Convert to fraction form
    316,903.32/475,356.08 = 80,245.92/x
  3. Step 3: Cross multiply
    316,903.32x = 475,356.08 × 80,245.92
  4. Step 4: Simplify right side
    316,903.32x = 38,145,385,967.19
  5. Step 5: Solve for x
    x = 38,145,385,967.19/316,903.32
  6. Step 6: Final answer
    x = 120,369.16

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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.