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Finding the Fourth Proportional to 395,362.16, 593,635.08 and 342,218.72

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Solution

The fourth proportional to 395,362.16, 593,635.08 and 342,218.72 is: 513,840.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,362.16 : 593,635.08 = 342,218.72 : x
  2. Step 2: Convert to fraction form
    395,362.16/593,635.08 = 342,218.72/x
  3. Step 3: Cross multiply
    395,362.16x = 593,635.08 × 342,218.72
  4. Step 4: Simplify right side
    395,362.16x = 203,153,037,224.70
  5. Step 5: Solve for x
    x = 203,153,037,224.70/395,362.16
  6. Step 6: Final answer
    x = 513,840.37

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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.