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Finding the Fourth Proportional to 398,592.29, 550,061.52 and 217,303.22

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Solution

The fourth proportional to 398,592.29, 550,061.52 and 217,303.22 is: 299,880.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,592.29 : 550,061.52 = 217,303.22 : x
  2. Step 2: Convert to fraction form
    398,592.29/550,061.52 = 217,303.22/x
  3. Step 3: Cross multiply
    398,592.29x = 550,061.52 × 217,303.22
  4. Step 4: Simplify right side
    398,592.29x = 119,530,140,054.36
  5. Step 5: Solve for x
    x = 119,530,140,054.36/398,592.29
  6. Step 6: Final answer
    x = 299,880.71

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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.