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Finding the Fourth Proportional to 219,486.66, 328,886.55 and 169,689.48

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Solution

The fourth proportional to 219,486.66, 328,886.55 and 169,689.48 is: 254,268.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,486.66 : 328,886.55 = 169,689.48 : x
  2. Step 2: Convert to fraction form
    219,486.66/328,886.55 = 169,689.48/x
  3. Step 3: Cross multiply
    219,486.66x = 328,886.55 × 169,689.48
  4. Step 4: Simplify right side
    219,486.66x = 55,808,587,648.49
  5. Step 5: Solve for x
    x = 55,808,587,648.49/219,486.66
  6. Step 6: Final answer
    x = 254,268.70

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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.