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Finding the Fourth Proportional to 352,309.98, 486,155.67 and 209,045.34

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Solution

The fourth proportional to 352,309.98, 486,155.67 and 209,045.34 is: 288,463.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,309.98 : 486,155.67 = 209,045.34 : x
  2. Step 2: Convert to fraction form
    352,309.98/486,155.67 = 209,045.34/x
  3. Step 3: Cross multiply
    352,309.98x = 486,155.67 × 209,045.34
  4. Step 4: Simplify right side
    352,309.98x = 101,628,577,328.08
  5. Step 5: Solve for x
    x = 101,628,577,328.08/352,309.98
  6. Step 6: Final answer
    x = 288,463.52

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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.