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Finding the Fourth Proportional to 243,069.80, 335,301.54 and 142,448.36

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Solution

The fourth proportional to 243,069.80, 335,301.54 and 142,448.36 is: 196,499.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,069.80 : 335,301.54 = 142,448.36 : x
  2. Step 2: Convert to fraction form
    243,069.80/335,301.54 = 142,448.36/x
  3. Step 3: Cross multiply
    243,069.80x = 335,301.54 × 142,448.36
  4. Step 4: Simplify right side
    243,069.80x = 47,763,154,478.47
  5. Step 5: Solve for x
    x = 47,763,154,478.47/243,069.80
  6. Step 6: Final answer
    x = 196,499.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.