Home / 427,931.26-642,016.85-171,943.58

Finding the Fourth Proportional to 427,931.26, 642,016.85 and 171,943.58

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Solution

The fourth proportional to 427,931.26, 642,016.85 and 171,943.58 is: 257,963.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,931.26 : 642,016.85 = 171,943.58 : x
  2. Step 2: Convert to fraction form
    427,931.26/642,016.85 = 171,943.58/x
  3. Step 3: Cross multiply
    427,931.26x = 642,016.85 × 171,943.58
  4. Step 4: Simplify right side
    427,931.26x = 110,390,676,354.65
  5. Step 5: Solve for x
    x = 110,390,676,354.65/427,931.26
  6. Step 6: Final answer
    x = 257,963.57

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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.