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Finding the Fourth Proportional to 381,490.79, 572,258.06 and 101,000.75

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Solution

The fourth proportional to 381,490.79, 572,258.06 and 101,000.75 is: 151,506.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,490.79 : 572,258.06 = 101,000.75 : x
  2. Step 2: Convert to fraction form
    381,490.79/572,258.06 = 101,000.75/x
  3. Step 3: Cross multiply
    381,490.79x = 572,258.06 × 101,000.75
  4. Step 4: Simplify right side
    381,490.79x = 57,798,492,748.54
  5. Step 5: Solve for x
    x = 57,798,492,748.54/381,490.79
  6. Step 6: Final answer
    x = 151,506.92

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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.