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Finding the Fourth Proportional to 545,507.05, 818,389.32 and 171,530.05

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Solution

The fourth proportional to 545,507.05, 818,389.32 and 171,530.05 is: 257,335.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,507.05 : 818,389.32 = 171,530.05 : x
  2. Step 2: Convert to fraction form
    545,507.05/818,389.32 = 171,530.05/x
  3. Step 3: Cross multiply
    545,507.05x = 818,389.32 × 171,530.05
  4. Step 4: Simplify right side
    545,507.05x = 140,378,360,979.07
  5. Step 5: Solve for x
    x = 140,378,360,979.07/545,507.05
  6. Step 6: Final answer
    x = 257,335.56

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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.