Home / 427,217.29-640,889.65-157,324.66

Finding the Fourth Proportional to 427,217.29, 640,889.65 and 157,324.66

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Solution

The fourth proportional to 427,217.29, 640,889.65 and 157,324.66 is: 236,010.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,217.29 : 640,889.65 = 157,324.66 : x
  2. Step 2: Convert to fraction form
    427,217.29/640,889.65 = 157,324.66/x
  3. Step 3: Cross multiply
    427,217.29x = 640,889.65 × 157,324.66
  4. Step 4: Simplify right side
    427,217.29x = 100,827,746,283.77
  5. Step 5: Solve for x
    x = 100,827,746,283.77/427,217.29
  6. Step 6: Final answer
    x = 236,010.45

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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.