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Finding the Fourth Proportional to 340,877.76, 511,316.63 and 104,220.43

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Solution

The fourth proportional to 340,877.76, 511,316.63 and 104,220.43 is: 156,330.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,877.76 : 511,316.63 = 104,220.43 : x
  2. Step 2: Convert to fraction form
    340,877.76/511,316.63 = 104,220.43/x
  3. Step 3: Cross multiply
    340,877.76x = 511,316.63 × 104,220.43
  4. Step 4: Simplify right side
    340,877.76x = 53,289,639,044.75
  5. Step 5: Solve for x
    x = 53,289,639,044.75/340,877.76
  6. Step 6: Final answer
    x = 156,330.64

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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.