Home / 221,411.16-305,554.14-125,931.60

Finding the Fourth Proportional to 221,411.16, 305,554.14 and 125,931.60

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Solution

The fourth proportional to 221,411.16, 305,554.14 and 125,931.60 is: 173,789.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,411.16 : 305,554.14 = 125,931.60 : x
  2. Step 2: Convert to fraction form
    221,411.16/305,554.14 = 125,931.60/x
  3. Step 3: Cross multiply
    221,411.16x = 305,554.14 × 125,931.60
  4. Step 4: Simplify right side
    221,411.16x = 38,478,921,736.82
  5. Step 5: Solve for x
    x = 38,478,921,736.82/221,411.16
  6. Step 6: Final answer
    x = 173,789.44

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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.