Home / 352,312.35-486,189.59-209,190.21

Finding the Fourth Proportional to 352,312.35, 486,189.59 and 209,190.21

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Solution

The fourth proportional to 352,312.35, 486,189.59 and 209,190.21 is: 288,681.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,312.35 : 486,189.59 = 209,190.21 : x
  2. Step 2: Convert to fraction form
    352,312.35/486,189.59 = 209,190.21/x
  3. Step 3: Cross multiply
    352,312.35x = 486,189.59 × 209,190.21
  4. Step 4: Simplify right side
    352,312.35x = 101,706,101,385.96
  5. Step 5: Solve for x
    x = 101,706,101,385.96/352,312.35
  6. Step 6: Final answer
    x = 288,681.62

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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.