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Finding the Fourth Proportional to 245,728.40, 367,901.40 and 220,845.20

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Solution

The fourth proportional to 245,728.40, 367,901.40 and 220,845.20 is: 330,646.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,728.40 : 367,901.40 = 220,845.20 : x
  2. Step 2: Convert to fraction form
    245,728.40/367,901.40 = 220,845.20/x
  3. Step 3: Cross multiply
    245,728.40x = 367,901.40 × 220,845.20
  4. Step 4: Simplify right side
    245,728.40x = 81,249,258,263.28
  5. Step 5: Solve for x
    x = 81,249,258,263.28/245,728.40
  6. Step 6: Final answer
    x = 330,646.59

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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.