Home / 260,416.11-390,655.41-91,901.64

Finding the Fourth Proportional to 260,416.11, 390,655.41 and 91,901.64

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Solution

The fourth proportional to 260,416.11, 390,655.41 and 91,901.64 is: 137,863.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,416.11 : 390,655.41 = 91,901.64 : x
  2. Step 2: Convert to fraction form
    260,416.11/390,655.41 = 91,901.64/x
  3. Step 3: Cross multiply
    260,416.11x = 390,655.41 × 91,901.64
  4. Step 4: Simplify right side
    260,416.11x = 35,901,872,853.87
  5. Step 5: Solve for x
    x = 35,901,872,853.87/260,416.11
  6. Step 6: Final answer
    x = 137,863.49

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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.