Home / 220,809.60-304,718.40-120,208.32

Finding the Fourth Proportional to 220,809.60, 304,718.40 and 120,208.32

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Solution

The fourth proportional to 220,809.60, 304,718.40 and 120,208.32 is: 165,888.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,809.60 : 304,718.40 = 120,208.32 : x
  2. Step 2: Convert to fraction form
    220,809.60/304,718.40 = 120,208.32/x
  3. Step 3: Cross multiply
    220,809.60x = 304,718.40 × 120,208.32
  4. Step 4: Simplify right side
    220,809.60x = 36,629,686,937.09
  5. Step 5: Solve for x
    x = 36,629,686,937.09/220,809.60
  6. Step 6: Final answer
    x = 165,888.11

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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.