Home / 425,630.76-638,634.21-223,178.52

Finding the Fourth Proportional to 425,630.76, 638,634.21 and 223,178.52

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Solution

The fourth proportional to 425,630.76, 638,634.21 and 223,178.52 is: 334,866.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,630.76 : 638,634.21 = 223,178.52 : x
  2. Step 2: Convert to fraction form
    425,630.76/638,634.21 = 223,178.52/x
  3. Step 3: Cross multiply
    425,630.76x = 638,634.21 × 223,178.52
  4. Step 4: Simplify right side
    425,630.76x = 142,529,434,616.00
  5. Step 5: Solve for x
    x = 142,529,434,616.00/425,630.76
  6. Step 6: Final answer
    x = 334,866.38

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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.