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Finding the Fourth Proportional to 385,641.94, 531,667.65 and 270,766.66

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Solution

The fourth proportional to 385,641.94, 531,667.65 and 270,766.66 is: 373,294.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,641.94 : 531,667.65 = 270,766.66 : x
  2. Step 2: Convert to fraction form
    385,641.94/531,667.65 = 270,766.66/x
  3. Step 3: Cross multiply
    385,641.94x = 531,667.65 × 270,766.66
  4. Step 4: Simplify right side
    385,641.94x = 143,957,873,820.55
  5. Step 5: Solve for x
    x = 143,957,873,820.55/385,641.94
  6. Step 6: Final answer
    x = 373,294.13

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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.