Home / 221,383.76-305,588.48-130,740.10

Finding the Fourth Proportional to 221,383.76, 305,588.48 and 130,740.10

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Solution

The fourth proportional to 221,383.76, 305,588.48 and 130,740.10 is: 180,467.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,383.76 : 305,588.48 = 130,740.10 : x
  2. Step 2: Convert to fraction form
    221,383.76/305,588.48 = 130,740.10/x
  3. Step 3: Cross multiply
    221,383.76x = 305,588.48 × 130,740.10
  4. Step 4: Simplify right side
    221,383.76x = 39,952,668,434.05
  5. Step 5: Solve for x
    x = 39,952,668,434.05/221,383.76
  6. Step 6: Final answer
    x = 180,467.93

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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.