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Finding the Fourth Proportional to 200,357.15, 300,058.63 and 115,939.35

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Solution

The fourth proportional to 200,357.15, 300,058.63 and 115,939.35 is: 173,632.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,357.15 : 300,058.63 = 115,939.35 : x
  2. Step 2: Convert to fraction form
    200,357.15/300,058.63 = 115,939.35/x
  3. Step 3: Cross multiply
    200,357.15x = 300,058.63 × 115,939.35
  4. Step 4: Simplify right side
    200,357.15x = 34,788,602,234.24
  5. Step 5: Solve for x
    x = 34,788,602,234.24/200,357.15
  6. Step 6: Final answer
    x = 173,632.95

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1.5x scale

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.