Home / 255,905.52-352,966.72-221,853.12

Finding the Fourth Proportional to 255,905.52, 352,966.72 and 221,853.12

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Solution

The fourth proportional to 255,905.52, 352,966.72 and 221,853.12 is: 305,998.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,905.52 : 352,966.72 = 221,853.12 : x
  2. Step 2: Convert to fraction form
    255,905.52/352,966.72 = 221,853.12/x
  3. Step 3: Cross multiply
    255,905.52x = 352,966.72 × 221,853.12
  4. Step 4: Simplify right side
    255,905.52x = 78,306,768,088.17
  5. Step 5: Solve for x
    x = 78,306,768,088.17/255,905.52
  6. Step 6: Final answer
    x = 305,998.75

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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.