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Finding the Fourth Proportional to 322,886.78, 484,325.30 and 145,268.36

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Solution

The fourth proportional to 322,886.78, 484,325.30 and 145,268.36 is: 217,900.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    322,886.78 : 484,325.30 = 145,268.36 : x
  2. Step 2: Convert to fraction form
    322,886.78/484,325.30 = 145,268.36/x
  3. Step 3: Cross multiply
    322,886.78x = 484,325.30 × 145,268.36
  4. Step 4: Simplify right side
    322,886.78x = 70,357,142,037.51
  5. Step 5: Solve for x
    x = 70,357,142,037.51/322,886.78
  6. Step 6: Final answer
    x = 217,900.35

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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.