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Finding the Fourth Proportional to 426,124.42, 639,471.75 and 176,806.42

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Solution

The fourth proportional to 426,124.42, 639,471.75 and 176,806.42 is: 265,327.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,124.42 : 639,471.75 = 176,806.42 : x
  2. Step 2: Convert to fraction form
    426,124.42/639,471.75 = 176,806.42/x
  3. Step 3: Cross multiply
    426,124.42x = 639,471.75 × 176,806.42
  4. Step 4: Simplify right side
    426,124.42x = 113,062,710,808.64
  5. Step 5: Solve for x
    x = 113,062,710,808.64/426,124.42
  6. Step 6: Final answer
    x = 265,327.93

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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.