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Finding the Fourth Proportional to 426,680.68, 640,045.58 and 160,443.50

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Solution

The fourth proportional to 426,680.68, 640,045.58 and 160,443.50 is: 240,674.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,680.68 : 640,045.58 = 160,443.50 : x
  2. Step 2: Convert to fraction form
    426,680.68/640,045.58 = 160,443.50/x
  3. Step 3: Cross multiply
    426,680.68x = 640,045.58 × 160,443.50
  4. Step 4: Simplify right side
    426,680.68x = 102,691,153,014.73
  5. Step 5: Solve for x
    x = 102,691,153,014.73/426,680.68
  6. Step 6: Final answer
    x = 240,674.49

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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.