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Finding the Fourth Proportional to 426,086.30, 639,353.01 and 160,030.46

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Solution

The fourth proportional to 426,086.30, 639,353.01 and 160,030.46 is: 240,129.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,086.30 : 639,353.01 = 160,030.46 : x
  2. Step 2: Convert to fraction form
    426,086.30/639,353.01 = 160,030.46/x
  3. Step 3: Cross multiply
    426,086.30x = 639,353.01 × 160,030.46
  4. Step 4: Simplify right side
    426,086.30x = 102,315,956,292.69
  5. Step 5: Solve for x
    x = 102,315,956,292.69/426,086.30
  6. Step 6: Final answer
    x = 240,129.66

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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.