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Finding the Fourth Proportional to 279,434.94, 385,612.80 and 152,107.80

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Solution

The fourth proportional to 279,434.94, 385,612.80 and 152,107.80 is: 209,904.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,434.94 : 385,612.80 = 152,107.80 : x
  2. Step 2: Convert to fraction form
    279,434.94/385,612.80 = 152,107.80/x
  3. Step 3: Cross multiply
    279,434.94x = 385,612.80 × 152,107.80
  4. Step 4: Simplify right side
    279,434.94x = 58,654,714,659.84
  5. Step 5: Solve for x
    x = 58,654,714,659.84/279,434.94
  6. Step 6: Final answer
    x = 209,904.73

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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.