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Finding the Fourth Proportional to 391,000.72, 586,541.04 and 106,697.20

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Solution

The fourth proportional to 391,000.72, 586,541.04 and 106,697.20 is: 160,056.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,000.72 : 586,541.04 = 106,697.20 : x
  2. Step 2: Convert to fraction form
    391,000.72/586,541.04 = 106,697.20/x
  3. Step 3: Cross multiply
    391,000.72x = 586,541.04 × 106,697.20
  4. Step 4: Simplify right side
    391,000.72x = 62,582,286,653.09
  5. Step 5: Solve for x
    x = 62,582,286,653.09/391,000.72
  6. Step 6: Final answer
    x = 160,056.70

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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.