Home / 260,513.04-390,765.20-83,017.60

Finding the Fourth Proportional to 260,513.04, 390,765.20 and 83,017.60

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Solution

The fourth proportional to 260,513.04, 390,765.20 and 83,017.60 is: 124,525.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,513.04 : 390,765.20 = 83,017.60 : x
  2. Step 2: Convert to fraction form
    260,513.04/390,765.20 = 83,017.60/x
  3. Step 3: Cross multiply
    260,513.04x = 390,765.20 × 83,017.60
  4. Step 4: Simplify right side
    260,513.04x = 32,440,389,067.52
  5. Step 5: Solve for x
    x = 32,440,389,067.52/260,513.04
  6. Step 6: Final answer
    x = 124,525.01

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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.