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Finding the Fourth Proportional to 287,389.80, 431,084.70 and 182,327.40

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Solution

The fourth proportional to 287,389.80, 431,084.70 and 182,327.40 is: 273,491.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,389.80 : 431,084.70 = 182,327.40 : x
  2. Step 2: Convert to fraction form
    287,389.80/431,084.70 = 182,327.40/x
  3. Step 3: Cross multiply
    287,389.80x = 431,084.70 × 182,327.40
  4. Step 4: Simplify right side
    287,389.80x = 78,598,552,530.78
  5. Step 5: Solve for x
    x = 78,598,552,530.78/287,389.80
  6. Step 6: Final answer
    x = 273,491.10

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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.