Home / 389,439.64-537,443.04-219,673.72

Finding the Fourth Proportional to 389,439.64, 537,443.04 and 219,673.72

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Solution

The fourth proportional to 389,439.64, 537,443.04 and 219,673.72 is: 303,158.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,439.64 : 537,443.04 = 219,673.72 : x
  2. Step 2: Convert to fraction form
    389,439.64/537,443.04 = 219,673.72/x
  3. Step 3: Cross multiply
    389,439.64x = 537,443.04 × 219,673.72
  4. Step 4: Simplify right side
    389,439.64x = 118,062,111,884.91
  5. Step 5: Solve for x
    x = 118,062,111,884.91/389,439.64
  6. Step 6: Final answer
    x = 303,158.95

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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.