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Finding the Fourth Proportional to 322,888.80, 484,328.30 and 145,270.36

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Solution

The fourth proportional to 322,888.80, 484,328.30 and 145,270.36 is: 217,903.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    322,888.80 : 484,328.30 = 145,270.36 : x
  2. Step 2: Convert to fraction form
    322,888.80/484,328.30 = 145,270.36/x
  3. Step 3: Cross multiply
    322,888.80x = 484,328.30 × 145,270.36
  4. Step 4: Simplify right side
    322,888.80x = 70,358,546,499.19
  5. Step 5: Solve for x
    x = 70,358,546,499.19/322,888.80
  6. Step 6: Final answer
    x = 217,903.34

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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.