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Finding the Fourth Proportional to 326,178.24, 489,316 and 115,798.56

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Solution

The fourth proportional to 326,178.24, 489,316 and 115,798.56 is: 173,715.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,178.24 : 489,316 = 115,798.56 : x
  2. Step 2: Convert to fraction form
    326,178.24/489,316 = 115,798.56/x
  3. Step 3: Cross multiply
    326,178.24x = 489,316 × 115,798.56
  4. Step 4: Simplify right side
    326,178.24x = 56,662,088,184.96
  5. Step 5: Solve for x
    x = 56,662,088,184.96/326,178.24
  6. Step 6: Final answer
    x = 173,715.11

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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.