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Finding the Fourth Proportional to 219,306.48, 328,762.08 and 100,916.88

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Solution

The fourth proportional to 219,306.48, 328,762.08 and 100,916.88 is: 151,284.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,306.48 : 328,762.08 = 100,916.88 : x
  2. Step 2: Convert to fraction form
    219,306.48/328,762.08 = 100,916.88/x
  3. Step 3: Cross multiply
    219,306.48x = 328,762.08 × 100,916.88
  4. Step 4: Simplify right side
    219,306.48x = 33,177,643,375.91
  5. Step 5: Solve for x
    x = 33,177,643,375.91/219,306.48
  6. Step 6: Final answer
    x = 151,284.37

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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.