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Finding the Fourth Proportional to 290,050.92, 435,058.83 and 172,470.51

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Solution

The fourth proportional to 290,050.92, 435,058.83 and 172,470.51 is: 258,695.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,050.92 : 435,058.83 = 172,470.51 : x
  2. Step 2: Convert to fraction form
    290,050.92/435,058.83 = 172,470.51/x
  3. Step 3: Cross multiply
    290,050.92x = 435,058.83 × 172,470.51
  4. Step 4: Simplify right side
    290,050.92x = 75,034,818,290.10
  5. Step 5: Solve for x
    x = 75,034,818,290.10/290,050.92
  6. Step 6: Final answer
    x = 258,695.33

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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.