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Finding the Fourth Proportional to 545,121.42, 817,617.73 and 145,793.15

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Solution

The fourth proportional to 545,121.42, 817,617.73 and 145,793.15 is: 218,672.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,121.42 : 817,617.73 = 145,793.15 : x
  2. Step 2: Convert to fraction form
    545,121.42/817,617.73 = 145,793.15/x
  3. Step 3: Cross multiply
    545,121.42x = 817,617.73 × 145,793.15
  4. Step 4: Simplify right side
    545,121.42x = 119,203,064,352.55
  5. Step 5: Solve for x
    x = 119,203,064,352.55/545,121.42
  6. Step 6: Final answer
    x = 218,672.50

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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.