Home / 260,410.10-390,646.40-91,895.63

Finding the Fourth Proportional to 260,410.10, 390,646.40 and 91,895.63

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Solution

The fourth proportional to 260,410.10, 390,646.40 and 91,895.63 is: 137,854.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,410.10 : 390,646.40 = 91,895.63 : x
  2. Step 2: Convert to fraction form
    260,410.10/390,646.40 = 91,895.63/x
  3. Step 3: Cross multiply
    260,410.10x = 390,646.40 × 91,895.63
  4. Step 4: Simplify right side
    260,410.10x = 35,898,694,622.52
  5. Step 5: Solve for x
    x = 35,898,694,622.52/260,410.10
  6. Step 6: Final answer
    x = 137,854.47

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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.