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Finding the Fourth Proportional to 417,392.40, 576,001.80 and 226,405.20

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Solution

The fourth proportional to 417,392.40, 576,001.80 and 226,405.20 is: 312,439.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    417,392.40 : 576,001.80 = 226,405.20 : x
  2. Step 2: Convert to fraction form
    417,392.40/576,001.80 = 226,405.20/x
  3. Step 3: Cross multiply
    417,392.40x = 576,001.80 × 226,405.20
  4. Step 4: Simplify right side
    417,392.40x = 130,409,802,729.36
  5. Step 5: Solve for x
    x = 130,409,802,729.36/417,392.40
  6. Step 6: Final answer
    x = 312,439.33

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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.