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Finding the Fourth Proportional to 386,887.60, 579,870.60 and 162,247.60

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Solution

The fourth proportional to 386,887.60, 579,870.60 and 162,247.60 is: 243,178.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,887.60 : 579,870.60 = 162,247.60 : x
  2. Step 2: Convert to fraction form
    386,887.60/579,870.60 = 162,247.60/x
  3. Step 3: Cross multiply
    386,887.60x = 579,870.60 × 162,247.60
  4. Step 4: Simplify right side
    386,887.60x = 94,082,613,160.56
  5. Step 5: Solve for x
    x = 94,082,613,160.56/386,887.60
  6. Step 6: Final answer
    x = 243,178.16

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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.