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Finding the Fourth Proportional to 218,856.40, 328,284.52 and 169,009.20

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Solution

The fourth proportional to 218,856.40, 328,284.52 and 169,009.20 is: 253,513.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,856.40 : 328,284.52 = 169,009.20 : x
  2. Step 2: Convert to fraction form
    218,856.40/328,284.52 = 169,009.20/x
  3. Step 3: Cross multiply
    218,856.40x = 328,284.52 × 169,009.20
  4. Step 4: Simplify right side
    218,856.40x = 55,483,104,097.58
  5. Step 5: Solve for x
    x = 55,483,104,097.58/218,856.40
  6. Step 6: Final answer
    x = 253,513.74

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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.