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Finding the Fourth Proportional to 330,187.40, 495,281.10 and 282,948.20

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Solution

The fourth proportional to 330,187.40, 495,281.10 and 282,948.20 is: 424,422.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,187.40 : 495,281.10 = 282,948.20 : x
  2. Step 2: Convert to fraction form
    330,187.40/495,281.10 = 282,948.20/x
  3. Step 3: Cross multiply
    330,187.40x = 495,281.10 × 282,948.20
  4. Step 4: Simplify right side
    330,187.40x = 140,138,895,739.02
  5. Step 5: Solve for x
    x = 140,138,895,739.02/330,187.40
  6. Step 6: Final answer
    x = 424,422.30

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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.