Home / 545,140.42-817,653.12-145,821.50

Finding the Fourth Proportional to 545,140.42, 817,653.12 and 145,821.50

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Solution

The fourth proportional to 545,140.42, 817,653.12 and 145,821.50 is: 218,716.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,140.42 : 817,653.12 = 145,821.50 : x
  2. Step 2: Convert to fraction form
    545,140.42/817,653.12 = 145,821.50/x
  3. Step 3: Cross multiply
    545,140.42x = 817,653.12 × 145,821.50
  4. Step 4: Simplify right side
    545,140.42x = 119,231,404,438.08
  5. Step 5: Solve for x
    x = 119,231,404,438.08/545,140.42
  6. Step 6: Final answer
    x = 218,716.87

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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.