Home / 219,213.75-302,515.18-123,718.40

Finding the Fourth Proportional to 219,213.75, 302,515.18 and 123,718.40

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Solution

The fourth proportional to 219,213.75, 302,515.18 and 123,718.40 is: 170,731.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,213.75 : 302,515.18 = 123,718.40 : x
  2. Step 2: Convert to fraction form
    219,213.75/302,515.18 = 123,718.40/x
  3. Step 3: Cross multiply
    219,213.75x = 302,515.18 × 123,718.40
  4. Step 4: Simplify right side
    219,213.75x = 37,426,694,045.31
  5. Step 5: Solve for x
    x = 37,426,694,045.31/219,213.75
  6. Step 6: Final answer
    x = 170,731.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.