Home / 221,781.61-306,058.32-126,288.31

Finding the Fourth Proportional to 221,781.61, 306,058.32 and 126,288.31

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Solution

The fourth proportional to 221,781.61, 306,058.32 and 126,288.31 is: 174,277.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,781.61 : 306,058.32 = 126,288.31 : x
  2. Step 2: Convert to fraction form
    221,781.61/306,058.32 = 126,288.31/x
  3. Step 3: Cross multiply
    221,781.61x = 306,058.32 × 126,288.31
  4. Step 4: Simplify right side
    221,781.61x = 38,651,587,297.35
  5. Step 5: Solve for x
    x = 38,651,587,297.35/221,781.61
  6. Step 6: Final answer
    x = 174,277.69

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1.5x scale

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.