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Finding the Fourth Proportional to 283,646.80, 425,470.20 and 189,643.60

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Solution

The fourth proportional to 283,646.80, 425,470.20 and 189,643.60 is: 284,465.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,646.80 : 425,470.20 = 189,643.60 : x
  2. Step 2: Convert to fraction form
    283,646.80/425,470.20 = 189,643.60/x
  3. Step 3: Cross multiply
    283,646.80x = 425,470.20 × 189,643.60
  4. Step 4: Simplify right side
    283,646.80x = 80,687,700,420.72
  5. Step 5: Solve for x
    x = 80,687,700,420.72/283,646.80
  6. Step 6: Final answer
    x = 284,465.40

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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.