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Finding the Fourth Proportional to 328,227.39, 492,341.09 and 78,909.39

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Solution

The fourth proportional to 328,227.39, 492,341.09 and 78,909.39 is: 118,364.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,227.39 : 492,341.09 = 78,909.39 : x
  2. Step 2: Convert to fraction form
    328,227.39/492,341.09 = 78,909.39/x
  3. Step 3: Cross multiply
    328,227.39x = 492,341.09 × 78,909.39
  4. Step 4: Simplify right side
    328,227.39x = 38,850,334,689.29
  5. Step 5: Solve for x
    x = 38,850,334,689.29/328,227.39
  6. Step 6: Final answer
    x = 118,364.09

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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.