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Finding the Fourth Proportional to 219,310.40, 328,965.60 and 160,261.40

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Solution

The fourth proportional to 219,310.40, 328,965.60 and 160,261.40 is: 240,392.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,310.40 : 328,965.60 = 160,261.40 : x
  2. Step 2: Convert to fraction form
    219,310.40/328,965.60 = 160,261.40/x
  3. Step 3: Cross multiply
    219,310.40x = 328,965.60 × 160,261.40
  4. Step 4: Simplify right side
    219,310.40x = 52,720,487,607.84
  5. Step 5: Solve for x
    x = 52,720,487,607.84/219,310.40
  6. Step 6: Final answer
    x = 240,392.10

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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.