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Finding the Fourth Proportional to 399,970.66, 598,481.76 and 240,143.74

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Solution

The fourth proportional to 399,970.66, 598,481.76 and 240,143.74 is: 359,330.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,970.66 : 598,481.76 = 240,143.74 : x
  2. Step 2: Convert to fraction form
    399,970.66/598,481.76 = 240,143.74/x
  3. Step 3: Cross multiply
    399,970.66x = 598,481.76 × 240,143.74
  4. Step 4: Simplify right side
    399,970.66x = 143,721,648,168.18
  5. Step 5: Solve for x
    x = 143,721,648,168.18/399,970.66
  6. Step 6: Final answer
    x = 359,330.48

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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.