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Finding the Fourth Proportional to 385,667.78, 532,221.54 and 234,764.78

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Solution

The fourth proportional to 385,667.78, 532,221.54 and 234,764.78 is: 323,975.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,667.78 : 532,221.54 = 234,764.78 : x
  2. Step 2: Convert to fraction form
    385,667.78/532,221.54 = 234,764.78/x
  3. Step 3: Cross multiply
    385,667.78x = 532,221.54 × 234,764.78
  4. Step 4: Simplify right side
    385,667.78x = 124,946,872,749.36
  5. Step 5: Solve for x
    x = 124,946,872,749.36/385,667.78
  6. Step 6: Final answer
    x = 323,975.40

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1.5x scale

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.