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Finding the Fourth Proportional to 397,883.73, 549,572.72 and 288,813.81

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Solution

The fourth proportional to 397,883.73, 549,572.72 and 288,813.81 is: 398,921.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,883.73 : 549,572.72 = 288,813.81 : x
  2. Step 2: Convert to fraction form
    397,883.73/549,572.72 = 288,813.81/x
  3. Step 3: Cross multiply
    397,883.73x = 549,572.72 × 288,813.81
  4. Step 4: Simplify right side
    397,883.73x = 158,724,189,691.19
  5. Step 5: Solve for x
    x = 158,724,189,691.19/397,883.73
  6. Step 6: Final answer
    x = 398,921.04

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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.