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Finding the Fourth Proportional to 220,625.60, 328,443.46 and 219,313.40

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Solution

The fourth proportional to 220,625.60, 328,443.46 and 219,313.40 is: 326,490.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,625.60 : 328,443.46 = 219,313.40 : x
  2. Step 2: Convert to fraction form
    220,625.60/328,443.46 = 219,313.40/x
  3. Step 3: Cross multiply
    220,625.60x = 328,443.46 × 219,313.40
  4. Step 4: Simplify right side
    220,625.60x = 72,032,051,920.36
  5. Step 5: Solve for x
    x = 72,032,051,920.36/220,625.60
  6. Step 6: Final answer
    x = 326,490.00

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.