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Finding the Fourth Proportional to 194,479.20, 291,070.80 and 141,019.20

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Solution

The fourth proportional to 194,479.20, 291,070.80 and 141,019.20 is: 211,058.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    194,479.20 : 291,070.80 = 141,019.20 : x
  2. Step 2: Convert to fraction form
    194,479.20/291,070.80 = 141,019.20/x
  3. Step 3: Cross multiply
    194,479.20x = 291,070.80 × 141,019.20
  4. Step 4: Simplify right side
    194,479.20x = 41,046,571,359.36
  5. Step 5: Solve for x
    x = 41,046,571,359.36/194,479.20
  6. Step 6: Final answer
    x = 211,058.93

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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.