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Finding the Fourth Proportional to 426,127.42, 639,476.25 and 176,809.42

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Solution

The fourth proportional to 426,127.42, 639,476.25 and 176,809.42 is: 265,332.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,127.42 : 639,476.25 = 176,809.42 : x
  2. Step 2: Convert to fraction form
    426,127.42/639,476.25 = 176,809.42/x
  3. Step 3: Cross multiply
    426,127.42x = 639,476.25 × 176,809.42
  4. Step 4: Simplify right side
    426,127.42x = 113,065,424,866.28
  5. Step 5: Solve for x
    x = 113,065,424,866.28/426,127.42
  6. Step 6: Final answer
    x = 265,332.43

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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.