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Finding the Fourth Proportional to 505,871.40, 758,588.40 and 253,054.20

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Solution

The fourth proportional to 505,871.40, 758,588.40 and 253,054.20 is: 379,471.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,871.40 : 758,588.40 = 253,054.20 : x
  2. Step 2: Convert to fraction form
    505,871.40/758,588.40 = 253,054.20/x
  3. Step 3: Cross multiply
    505,871.40x = 758,588.40 × 253,054.20
  4. Step 4: Simplify right side
    505,871.40x = 191,963,980,691.28
  5. Step 5: Solve for x
    x = 191,963,980,691.28/505,871.40
  6. Step 6: Final answer
    x = 379,471.90

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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.