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Finding the Fourth Proportional to 385,027.78, 531,125.03 and 223,865.01

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Solution

The fourth proportional to 385,027.78, 531,125.03 and 223,865.01 is: 308,809.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,027.78 : 531,125.03 = 223,865.01 : x
  2. Step 2: Convert to fraction form
    385,027.78/531,125.03 = 223,865.01/x
  3. Step 3: Cross multiply
    385,027.78x = 531,125.03 × 223,865.01
  4. Step 4: Simplify right side
    385,027.78x = 118,900,310,152.20
  5. Step 5: Solve for x
    x = 118,900,310,152.20/385,027.78
  6. Step 6: Final answer
    x = 308,809.70

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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.