Home / 426,312.72-639,469.08-268,148.88

Finding the Fourth Proportional to 426,312.72, 639,469.08 and 268,148.88

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Solution

The fourth proportional to 426,312.72, 639,469.08 and 268,148.88 is: 402,223.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,312.72 : 639,469.08 = 268,148.88 : x
  2. Step 2: Convert to fraction form
    426,312.72/639,469.08 = 268,148.88/x
  3. Step 3: Cross multiply
    426,312.72x = 639,469.08 × 268,148.88
  4. Step 4: Simplify right side
    426,312.72x = 171,472,917,596.63
  5. Step 5: Solve for x
    x = 171,472,917,596.63/426,312.72
  6. Step 6: Final answer
    x = 402,223.32

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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.