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Finding the Fourth Proportional to 340,989.90, 511,486.47 and 104,332.20

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Solution

The fourth proportional to 340,989.90, 511,486.47 and 104,332.20 is: 156,498.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,989.90 : 511,486.47 = 104,332.20 : x
  2. Step 2: Convert to fraction form
    340,989.90/511,486.47 = 104,332.20/x
  3. Step 3: Cross multiply
    340,989.90x = 511,486.47 × 104,332.20
  4. Step 4: Simplify right side
    340,989.90x = 53,364,508,685.33
  5. Step 5: Solve for x
    x = 53,364,508,685.33/340,989.90
  6. Step 6: Final answer
    x = 156,498.80

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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.