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Finding the Fourth Proportional to 545,713.40, 818,659.70 and 171,646.20

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Solution

The fourth proportional to 545,713.40, 818,659.70 and 171,646.20 is: 257,497.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,713.40 : 818,659.70 = 171,646.20 : x
  2. Step 2: Convert to fraction form
    545,713.40/818,659.70 = 171,646.20/x
  3. Step 3: Cross multiply
    545,713.40x = 818,659.70 × 171,646.20
  4. Step 4: Simplify right side
    545,713.40x = 140,519,826,598.14
  5. Step 5: Solve for x
    x = 140,519,826,598.14/545,713.40
  6. Step 6: Final answer
    x = 257,497.48

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1.5x scale

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.