Home / 211,454.40-291,820.56-139,708.56

Finding the Fourth Proportional to 211,454.40, 291,820.56 and 139,708.56

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Solution

The fourth proportional to 211,454.40, 291,820.56 and 139,708.56 is: 192,806.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,454.40 : 291,820.56 = 139,708.56 : x
  2. Step 2: Convert to fraction form
    211,454.40/291,820.56 = 139,708.56/x
  3. Step 3: Cross multiply
    211,454.40x = 291,820.56 × 139,708.56
  4. Step 4: Simplify right side
    211,454.40x = 40,769,830,215.99
  5. Step 5: Solve for x
    x = 40,769,830,215.99/211,454.40
  6. Step 6: Final answer
    x = 192,806.72

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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.