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Finding the Fourth Proportional to 340,911.13, 511,440.51 and 130,549.07

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Solution

The fourth proportional to 340,911.13, 511,440.51 and 130,549.07 is: 195,851.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,911.13 : 511,440.51 = 130,549.07 : x
  2. Step 2: Convert to fraction form
    340,911.13/511,440.51 = 130,549.07/x
  3. Step 3: Cross multiply
    340,911.13x = 511,440.51 × 130,549.07
  4. Step 4: Simplify right side
    340,911.13x = 66,768,082,940.83
  5. Step 5: Solve for x
    x = 66,768,082,940.83/340,911.13
  6. Step 6: Final answer
    x = 195,851.87

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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.