Home / 257,869.71-355,854.60-143,141.72

Finding the Fourth Proportional to 257,869.71, 355,854.60 and 143,141.72

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Solution

The fourth proportional to 257,869.71, 355,854.60 and 143,141.72 is: 197,532.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,869.71 : 355,854.60 = 143,141.72 : x
  2. Step 2: Convert to fraction form
    257,869.71/355,854.60 = 143,141.72/x
  3. Step 3: Cross multiply
    257,869.71x = 355,854.60 × 143,141.72
  4. Step 4: Simplify right side
    257,869.71x = 50,937,639,513.91
  5. Step 5: Solve for x
    x = 50,937,639,513.91/257,869.71
  6. Step 6: Final answer
    x = 197,532.47

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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.