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Finding the Fourth Proportional to 426,681.18, 640,046.33 and 160,443.99

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Solution

The fourth proportional to 426,681.18, 640,046.33 and 160,443.99 is: 240,675.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,681.18 : 640,046.33 = 160,443.99 : x
  2. Step 2: Convert to fraction form
    426,681.18/640,046.33 = 160,443.99/x
  3. Step 3: Cross multiply
    426,681.18x = 640,046.33 × 160,443.99
  4. Step 4: Simplify right side
    426,681.18x = 102,691,586,167.84
  5. Step 5: Solve for x
    x = 102,691,586,167.84/426,681.18
  6. Step 6: Final answer
    x = 240,675.22

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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.