Home / 223,950.09-309,091.38-128,488.35

Finding the Fourth Proportional to 223,950.09, 309,091.38 and 128,488.35

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Solution

The fourth proportional to 223,950.09, 309,091.38 and 128,488.35 is: 177,337.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,950.09 : 309,091.38 = 128,488.35 : x
  2. Step 2: Convert to fraction form
    223,950.09/309,091.38 = 128,488.35/x
  3. Step 3: Cross multiply
    223,950.09x = 309,091.38 × 128,488.35
  4. Step 4: Simplify right side
    223,950.09x = 39,714,641,415.42
  5. Step 5: Solve for x
    x = 39,714,641,415.42/223,950.09
  6. Step 6: Final answer
    x = 177,337.02

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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.