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Finding the Fourth Proportional to 272,210.31, 375,640.40 and 149,701.64

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Solution

The fourth proportional to 272,210.31, 375,640.40 and 149,701.64 is: 206,582.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,210.31 : 375,640.40 = 149,701.64 : x
  2. Step 2: Convert to fraction form
    272,210.31/375,640.40 = 149,701.64/x
  3. Step 3: Cross multiply
    272,210.31x = 375,640.40 × 149,701.64
  4. Step 4: Simplify right side
    272,210.31x = 56,233,983,930.26
  5. Step 5: Solve for x
    x = 56,233,983,930.26/272,210.31
  6. Step 6: Final answer
    x = 206,582.86

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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.