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Finding the Fourth Proportional to 330,680.40, 456,318.52 and 185,478.20

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Solution

The fourth proportional to 330,680.40, 456,318.52 and 185,478.20 is: 255,948.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,680.40 : 456,318.52 = 185,478.20 : x
  2. Step 2: Convert to fraction form
    330,680.40/456,318.52 = 185,478.20/x
  3. Step 3: Cross multiply
    330,680.40x = 456,318.52 × 185,478.20
  4. Step 4: Simplify right side
    330,680.40x = 84,637,137,716.26
  5. Step 5: Solve for x
    x = 84,637,137,716.26/330,680.40
  6. Step 6: Final answer
    x = 255,948.46

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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.