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Finding the Fourth Proportional to 245,639.20, 368,242.80 and 166,496.80

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Solution

The fourth proportional to 245,639.20, 368,242.80 and 166,496.80 is: 249,598.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,639.20 : 368,242.80 = 166,496.80 : x
  2. Step 2: Convert to fraction form
    245,639.20/368,242.80 = 166,496.80/x
  3. Step 3: Cross multiply
    245,639.20x = 368,242.80 × 166,496.80
  4. Step 4: Simplify right side
    245,639.20x = 61,311,247,823.04
  5. Step 5: Solve for x
    x = 61,311,247,823.04/245,639.20
  6. Step 6: Final answer
    x = 249,598.79

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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.