Home / 268,215.10-401,666.55-127,809.70

Finding the Fourth Proportional to 268,215.10, 401,666.55 and 127,809.70

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Solution

The fourth proportional to 268,215.10, 401,666.55 and 127,809.70 is: 191,401.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,215.10 : 401,666.55 = 127,809.70 : x
  2. Step 2: Convert to fraction form
    268,215.10/401,666.55 = 127,809.70/x
  3. Step 3: Cross multiply
    268,215.10x = 401,666.55 × 127,809.70
  4. Step 4: Simplify right side
    268,215.10x = 51,336,881,255.54
  5. Step 5: Solve for x
    x = 51,336,881,255.54/268,215.10
  6. Step 6: Final answer
    x = 191,401.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.