Home / 389,833.75-537,970.58-220,078.81

Finding the Fourth Proportional to 389,833.75, 537,970.58 and 220,078.81

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Solution

The fourth proportional to 389,833.75, 537,970.58 and 220,078.81 is: 303,708.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,833.75 : 537,970.58 = 220,078.81 : x
  2. Step 2: Convert to fraction form
    389,833.75/537,970.58 = 220,078.81/x
  3. Step 3: Cross multiply
    389,833.75x = 537,970.58 × 220,078.81
  4. Step 4: Simplify right side
    389,833.75x = 118,395,925,061.41
  5. Step 5: Solve for x
    x = 118,395,925,061.41/389,833.75
  6. Step 6: Final answer
    x = 303,708.76

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.