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Finding the Fourth Proportional to 219,736.72, 303,248.28 and 139,134.88

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Solution

The fourth proportional to 219,736.72, 303,248.28 and 139,134.88 is: 192,013.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,736.72 : 303,248.28 = 139,134.88 : x
  2. Step 2: Convert to fraction form
    219,736.72/303,248.28 = 139,134.88/x
  3. Step 3: Cross multiply
    219,736.72x = 303,248.28 × 139,134.88
  4. Step 4: Simplify right side
    219,736.72x = 42,192,413,048.01
  5. Step 5: Solve for x
    x = 42,192,413,048.01/219,736.72
  6. Step 6: Final answer
    x = 192,013.48

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1.5x scale

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.