Home / 221,259.60-305,249.04-128,064.02

Finding the Fourth Proportional to 221,259.60, 305,249.04 and 128,064.02

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Solution

The fourth proportional to 221,259.60, 305,249.04 and 128,064.02 is: 176,676.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,259.60 : 305,249.04 = 128,064.02 : x
  2. Step 2: Convert to fraction form
    221,259.60/305,249.04 = 128,064.02/x
  3. Step 3: Cross multiply
    221,259.60x = 305,249.04 × 128,064.02
  4. Step 4: Simplify right side
    221,259.60x = 39,091,417,637.30
  5. Step 5: Solve for x
    x = 39,091,417,637.30/221,259.60
  6. Step 6: Final answer
    x = 176,676.71

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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.