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Finding the Fourth Proportional to 219,366.32, 328,981.44 and 79,106.72

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Solution

The fourth proportional to 219,366.32, 328,981.44 and 79,106.72 is: 118,635.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,366.32 : 328,981.44 = 79,106.72 : x
  2. Step 2: Convert to fraction form
    219,366.32/328,981.44 = 79,106.72/x
  3. Step 3: Cross multiply
    219,366.32x = 328,981.44 × 79,106.72
  4. Step 4: Simplify right side
    219,366.32x = 26,024,642,659.28
  5. Step 5: Solve for x
    x = 26,024,642,659.28/219,366.32
  6. Step 6: Final answer
    x = 118,635.54

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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.