Home / 221,268.32-305,398.63-140,680.10

Finding the Fourth Proportional to 221,268.32, 305,398.63 and 140,680.10

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Solution

The fourth proportional to 221,268.32, 305,398.63 and 140,680.10 is: 194,169.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,268.32 : 305,398.63 = 140,680.10 : x
  2. Step 2: Convert to fraction form
    221,268.32/305,398.63 = 140,680.10/x
  3. Step 3: Cross multiply
    221,268.32x = 305,398.63 × 140,680.10
  4. Step 4: Simplify right side
    221,268.32x = 42,963,509,808.26
  5. Step 5: Solve for x
    x = 42,963,509,808.26/221,268.32
  6. Step 6: Final answer
    x = 194,169.28

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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.