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Finding the Fourth Proportional to 228,019.28, 342,028.92 and 61,807.28

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Solution

The fourth proportional to 228,019.28, 342,028.92 and 61,807.28 is: 92,710.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,019.28 : 342,028.92 = 61,807.28 : x
  2. Step 2: Convert to fraction form
    228,019.28/342,028.92 = 61,807.28/x
  3. Step 3: Cross multiply
    228,019.28x = 342,028.92 × 61,807.28
  4. Step 4: Simplify right side
    228,019.28x = 21,139,877,226.54
  5. Step 5: Solve for x
    x = 21,139,877,226.54/228,019.28
  6. Step 6: Final answer
    x = 92,710.92

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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.