Home / 312,713.18-431,565.78-190,253.34

Finding the Fourth Proportional to 312,713.18, 431,565.78 and 190,253.34

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Solution

The fourth proportional to 312,713.18, 431,565.78 and 190,253.34 is: 262,562.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,713.18 : 431,565.78 = 190,253.34 : x
  2. Step 2: Convert to fraction form
    312,713.18/431,565.78 = 190,253.34/x
  3. Step 3: Cross multiply
    312,713.18x = 431,565.78 × 190,253.34
  4. Step 4: Simplify right side
    312,713.18x = 82,106,831,074.71
  5. Step 5: Solve for x
    x = 82,106,831,074.71/312,713.18
  6. Step 6: Final answer
    x = 262,562.75

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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.