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Finding the Fourth Proportional to 289,178.40, 433,767.60 and 187,701.60

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Solution

The fourth proportional to 289,178.40, 433,767.60 and 187,701.60 is: 281,552.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,178.40 : 433,767.60 = 187,701.60 : x
  2. Step 2: Convert to fraction form
    289,178.40/433,767.60 = 187,701.60/x
  3. Step 3: Cross multiply
    289,178.40x = 433,767.60 × 187,701.60
  4. Step 4: Simplify right side
    289,178.40x = 81,418,872,548.16
  5. Step 5: Solve for x
    x = 81,418,872,548.16/289,178.40
  6. Step 6: Final answer
    x = 281,552.40

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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.