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Finding the Fourth Proportional to 356,640.35, 492,214.01 and 220,718.07

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Solution

The fourth proportional to 356,640.35, 492,214.01 and 220,718.07 is: 304,622.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,640.35 : 492,214.01 = 220,718.07 : x
  2. Step 2: Convert to fraction form
    356,640.35/492,214.01 = 220,718.07/x
  3. Step 3: Cross multiply
    356,640.35x = 492,214.01 × 220,718.07
  4. Step 4: Simplify right side
    356,640.35x = 108,640,525,210.57
  5. Step 5: Solve for x
    x = 108,640,525,210.57/356,640.35
  6. Step 6: Final answer
    x = 304,622.08

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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.