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Finding the Fourth Proportional to 219,373.42, 328,818.61 and 143,440.64

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Solution

The fourth proportional to 219,373.42, 328,818.61 and 143,440.64 is: 215,003.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,373.42 : 328,818.61 = 143,440.64 : x
  2. Step 2: Convert to fraction form
    219,373.42/328,818.61 = 143,440.64/x
  3. Step 3: Cross multiply
    219,373.42x = 328,818.61 × 143,440.64
  4. Step 4: Simplify right side
    219,373.42x = 47,165,952,542.28
  5. Step 5: Solve for x
    x = 47,165,952,542.28/219,373.42
  6. Step 6: Final answer
    x = 215,003.05

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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.