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Finding the Fourth Proportional to 245,502.42, 338,678.91 and 159,455.28

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Solution

The fourth proportional to 245,502.42, 338,678.91 and 159,455.28 is: 219,973.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,502.42 : 338,678.91 = 159,455.28 : x
  2. Step 2: Convert to fraction form
    245,502.42/338,678.91 = 159,455.28/x
  3. Step 3: Cross multiply
    245,502.42x = 338,678.91 × 159,455.28
  4. Step 4: Simplify right side
    245,502.42x = 54,004,140,424.14
  5. Step 5: Solve for x
    x = 54,004,140,424.14/245,502.42
  6. Step 6: Final answer
    x = 219,973.96

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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.