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Finding the Fourth Proportional to 219,251.61, 328,133.84 and 139,251.15

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Solution

The fourth proportional to 219,251.61, 328,133.84 and 139,251.15 is: 208,404.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,251.61 : 328,133.84 = 139,251.15 : x
  2. Step 2: Convert to fraction form
    219,251.61/328,133.84 = 139,251.15/x
  3. Step 3: Cross multiply
    219,251.61x = 328,133.84 × 139,251.15
  4. Step 4: Simplify right side
    219,251.61x = 45,693,013,877.66
  5. Step 5: Solve for x
    x = 45,693,013,877.66/219,251.61
  6. Step 6: Final answer
    x = 208,404.46

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1.5x scale

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.