Home / 389,396.16-537,321.60-219,633.12

Finding the Fourth Proportional to 389,396.16, 537,321.60 and 219,633.12

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Solution

The fourth proportional to 389,396.16, 537,321.60 and 219,633.12 is: 303,068.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,396.16 : 537,321.60 = 219,633.12 : x
  2. Step 2: Convert to fraction form
    389,396.16/537,321.60 = 219,633.12/x
  3. Step 3: Cross multiply
    389,396.16x = 537,321.60 × 219,633.12
  4. Step 4: Simplify right side
    389,396.16x = 118,013,619,451.39
  5. Step 5: Solve for x
    x = 118,013,619,451.39/389,396.16
  6. Step 6: Final answer
    x = 303,068.27

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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.