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Finding the Fourth Proportional to 282,612.60, 423,918.90 and 280,644.30

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Solution

The fourth proportional to 282,612.60, 423,918.90 and 280,644.30 is: 420,966.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,612.60 : 423,918.90 = 280,644.30 : x
  2. Step 2: Convert to fraction form
    282,612.60/423,918.90 = 280,644.30/x
  3. Step 3: Cross multiply
    282,612.60x = 423,918.90 × 280,644.30
  4. Step 4: Simplify right side
    282,612.60x = 118,970,422,947.27
  5. Step 5: Solve for x
    x = 118,970,422,947.27/282,612.60
  6. Step 6: Final answer
    x = 420,966.45

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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.