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Finding the Fourth Proportional to 320,260.10, 480,062.10 and 187,071.80

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Solution

The fourth proportional to 320,260.10, 480,062.10 and 187,071.80 is: 280,416.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,260.10 : 480,062.10 = 187,071.80 : x
  2. Step 2: Convert to fraction form
    320,260.10/480,062.10 = 187,071.80/x
  3. Step 3: Cross multiply
    320,260.10x = 480,062.10 × 187,071.80
  4. Step 4: Simplify right side
    320,260.10x = 89,806,081,158.78
  5. Step 5: Solve for x
    x = 89,806,081,158.78/320,260.10
  6. Step 6: Final answer
    x = 280,416.08

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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.