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Finding the Fourth Proportional to 287,235.60, 430,853.40 and 269,520.90

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Solution

The fourth proportional to 287,235.60, 430,853.40 and 269,520.90 is: 404,281.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,235.60 : 430,853.40 = 269,520.90 : x
  2. Step 2: Convert to fraction form
    287,235.60/430,853.40 = 269,520.90/x
  3. Step 3: Cross multiply
    287,235.60x = 430,853.40 × 269,520.90
  4. Step 4: Simplify right side
    287,235.60x = 116,123,996,136.06
  5. Step 5: Solve for x
    x = 116,123,996,136.06/287,235.60
  6. Step 6: Final answer
    x = 404,281.35

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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.