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Finding the Fourth Proportional to 398,350.88, 549,717.06 and 217,064.36

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Solution

The fourth proportional to 398,350.88, 549,717.06 and 217,064.36 is: 299,544.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,350.88 : 549,717.06 = 217,064.36 : x
  2. Step 2: Convert to fraction form
    398,350.88/549,717.06 = 217,064.36/x
  3. Step 3: Cross multiply
    398,350.88x = 549,717.06 × 217,064.36
  4. Step 4: Simplify right side
    398,350.88x = 119,323,981,809.98
  5. Step 5: Solve for x
    x = 119,323,981,809.98/398,350.88
  6. Step 6: Final answer
    x = 299,544.92

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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.