Home / 641,139.60-961,795.80-220,544.40

Finding the Fourth Proportional to 641,139.60, 961,795.80 and 220,544.40

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Solution

The fourth proportional to 641,139.60, 961,795.80 and 220,544.40 is: 330,846.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,139.60 : 961,795.80 = 220,544.40 : x
  2. Step 2: Convert to fraction form
    641,139.60/961,795.80 = 220,544.40/x
  3. Step 3: Cross multiply
    641,139.60x = 961,795.80 × 220,544.40
  4. Step 4: Simplify right side
    641,139.60x = 212,118,677,633.52
  5. Step 5: Solve for x
    x = 212,118,677,633.52/641,139.60
  6. Step 6: Final answer
    x = 330,846.32

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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.