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Finding the Fourth Proportional to 343,763.64, 474,422.40 and 190,816.20

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Solution

The fourth proportional to 343,763.64, 474,422.40 and 190,816.20 is: 263,342.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,763.64 : 474,422.40 = 190,816.20 : x
  2. Step 2: Convert to fraction form
    343,763.64/474,422.40 = 190,816.20/x
  3. Step 3: Cross multiply
    343,763.64x = 474,422.40 × 190,816.20
  4. Step 4: Simplify right side
    343,763.64x = 90,527,479,562.88
  5. Step 5: Solve for x
    x = 90,527,479,562.88/343,763.64
  6. Step 6: Final answer
    x = 263,342.22

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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.