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Finding the Fourth Proportional to 545,465.56, 818,178.90 and 190,478.20

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Solution

The fourth proportional to 545,465.56, 818,178.90 and 190,478.20 is: 285,710.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,465.56 : 818,178.90 = 190,478.20 : x
  2. Step 2: Convert to fraction form
    545,465.56/818,178.90 = 190,478.20/x
  3. Step 3: Cross multiply
    545,465.56x = 818,178.90 × 190,478.20
  4. Step 4: Simplify right side
    545,465.56x = 155,845,244,149.98
  5. Step 5: Solve for x
    x = 155,845,244,149.98/545,465.56
  6. Step 6: Final answer
    x = 285,710.51

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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.