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Finding the Fourth Proportional to 245,807.02, 339,246.02 and 138,397.98

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Solution

The fourth proportional to 245,807.02, 339,246.02 and 138,397.98 is: 191,007.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,807.02 : 339,246.02 = 138,397.98 : x
  2. Step 2: Convert to fraction form
    245,807.02/339,246.02 = 138,397.98/x
  3. Step 3: Cross multiply
    245,807.02x = 339,246.02 × 138,397.98
  4. Step 4: Simplify right side
    245,807.02x = 46,950,963,891.04
  5. Step 5: Solve for x
    x = 46,950,963,891.04/245,807.02
  6. Step 6: Final answer
    x = 191,007.42

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.