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Finding the Fourth Proportional to 312,580.08, 431,360.16 and 169,343.76

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Solution

The fourth proportional to 312,580.08, 431,360.16 and 169,343.76 is: 233,694.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,580.08 : 431,360.16 = 169,343.76 : x
  2. Step 2: Convert to fraction form
    312,580.08/431,360.16 = 169,343.76/x
  3. Step 3: Cross multiply
    312,580.08x = 431,360.16 × 169,343.76
  4. Step 4: Simplify right side
    312,580.08x = 73,048,151,408.60
  5. Step 5: Solve for x
    x = 73,048,151,408.60/312,580.08
  6. Step 6: Final answer
    x = 233,694.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.