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Finding the Fourth Proportional to 289,689.30, 433,549.80 and 254,259.90

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Solution

The fourth proportional to 289,689.30, 433,549.80 and 254,259.90 is: 380,526.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,689.30 : 433,549.80 = 254,259.90 : x
  2. Step 2: Convert to fraction form
    289,689.30/433,549.80 = 254,259.90/x
  3. Step 3: Cross multiply
    289,689.30x = 433,549.80 × 254,259.90
  4. Step 4: Simplify right side
    289,689.30x = 110,234,328,793.02
  5. Step 5: Solve for x
    x = 110,234,328,793.02/289,689.30
  6. Step 6: Final answer
    x = 380,526.06

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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.