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Finding the Fourth Proportional to 287,549.70, 431,324.55 and 203,568.90

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Solution

The fourth proportional to 287,549.70, 431,324.55 and 203,568.90 is: 305,353.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,549.70 : 431,324.55 = 203,568.90 : x
  2. Step 2: Convert to fraction form
    287,549.70/431,324.55 = 203,568.90/x
  3. Step 3: Cross multiply
    287,549.70x = 431,324.55 × 203,568.90
  4. Step 4: Simplify right side
    287,549.70x = 87,804,264,186.50
  5. Step 5: Solve for x
    x = 87,804,264,186.50/287,549.70
  6. Step 6: Final answer
    x = 305,353.35

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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.