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Finding the Fourth Proportional to 426,471.83, 639,929.13 and 173,937.59

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Solution

The fourth proportional to 426,471.83, 639,929.13 and 173,937.59 is: 260,996.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,471.83 : 639,929.13 = 173,937.59 : x
  2. Step 2: Convert to fraction form
    426,471.83/639,929.13 = 173,937.59/x
  3. Step 3: Cross multiply
    426,471.83x = 639,929.13 × 173,937.59
  4. Step 4: Simplify right side
    426,471.83x = 111,307,727,443.35
  5. Step 5: Solve for x
    x = 111,307,727,443.35/426,471.83
  6. Step 6: Final answer
    x = 260,996.67

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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.