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Finding the Fourth Proportional to 219,033.80, 328,526.40 and 61,278.20

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Solution

The fourth proportional to 219,033.80, 328,526.40 and 61,278.20 is: 91,910.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,033.80 : 328,526.40 = 61,278.20 : x
  2. Step 2: Convert to fraction form
    219,033.80/328,526.40 = 61,278.20/x
  3. Step 3: Cross multiply
    219,033.80x = 328,526.40 × 61,278.20
  4. Step 4: Simplify right side
    219,033.80x = 20,131,506,444.48
  5. Step 5: Solve for x
    x = 20,131,506,444.48/219,033.80
  6. Step 6: Final answer
    x = 91,910.50

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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.