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Finding the Fourth Proportional to 399,971.66, 598,483.26 and 240,144.74

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Solution

The fourth proportional to 399,971.66, 598,483.26 and 240,144.74 is: 359,331.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,971.66 : 598,483.26 = 240,144.74 : x
  2. Step 2: Convert to fraction form
    399,971.66/598,483.26 = 240,144.74/x
  3. Step 3: Cross multiply
    399,971.66x = 598,483.26 × 240,144.74
  4. Step 4: Simplify right side
    399,971.66x = 143,722,606,867.05
  5. Step 5: Solve for x
    x = 143,722,606,867.05/399,971.66
  6. Step 6: Final answer
    x = 359,331.98

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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.