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Finding the Fourth Proportional to 505,689.60, 758,577.84 and 131,712

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Solution

The fourth proportional to 505,689.60, 758,577.84 and 131,712 is: 197,579.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,689.60 : 758,577.84 = 131,712 : x
  2. Step 2: Convert to fraction form
    505,689.60/758,577.84 = 131,712/x
  3. Step 3: Cross multiply
    505,689.60x = 758,577.84 × 131,712
  4. Step 4: Simplify right side
    505,689.60x = 99,913,804,462.08
  5. Step 5: Solve for x
    x = 99,913,804,462.08/505,689.60
  6. Step 6: Final answer
    x = 197,579.31

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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.