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Finding the Fourth Proportional to 387,573.42, 534,847.95 and 217,807.14

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Solution

The fourth proportional to 387,573.42, 534,847.95 and 217,807.14 is: 300,571.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,573.42 : 534,847.95 = 217,807.14 : x
  2. Step 2: Convert to fraction form
    387,573.42/534,847.95 = 217,807.14/x
  3. Step 3: Cross multiply
    387,573.42x = 534,847.95 × 217,807.14
  4. Step 4: Simplify right side
    387,573.42x = 116,493,702,324.36
  5. Step 5: Solve for x
    x = 116,493,702,324.36/387,573.42
  6. Step 6: Final answer
    x = 300,571.96

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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.