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Finding the Fourth Proportional to 340,503.76, 510,578.28 and 127,096.18

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Solution

The fourth proportional to 340,503.76, 510,578.28 and 127,096.18 is: 190,578.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,503.76 : 510,578.28 = 127,096.18 : x
  2. Step 2: Convert to fraction form
    340,503.76/510,578.28 = 127,096.18/x
  3. Step 3: Cross multiply
    340,503.76x = 510,578.28 × 127,096.18
  4. Step 4: Simplify right side
    340,503.76x = 64,892,548,978.97
  5. Step 5: Solve for x
    x = 64,892,548,978.97/340,503.76
  6. Step 6: Final answer
    x = 190,578.07

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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.