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Finding the Fourth Proportional to 186,319.40, 279,479.10 and 130,040.60

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Solution

The fourth proportional to 186,319.40, 279,479.10 and 130,040.60 is: 195,060.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,319.40 : 279,479.10 = 130,040.60 : x
  2. Step 2: Convert to fraction form
    186,319.40/279,479.10 = 130,040.60/x
  3. Step 3: Cross multiply
    186,319.40x = 279,479.10 × 130,040.60
  4. Step 4: Simplify right side
    186,319.40x = 36,343,629,851.46
  5. Step 5: Solve for x
    x = 36,343,629,851.46/186,319.40
  6. Step 6: Final answer
    x = 195,060.90

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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.