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Finding the Fourth Proportional to 401,358.20, 553,879.66 and 220,069.66

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Solution

The fourth proportional to 401,358.20, 553,879.66 and 220,069.66 is: 303,699.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,358.20 : 553,879.66 = 220,069.66 : x
  2. Step 2: Convert to fraction form
    401,358.20/553,879.66 = 220,069.66/x
  3. Step 3: Cross multiply
    401,358.20x = 553,879.66 × 220,069.66
  4. Step 4: Simplify right side
    401,358.20x = 121,892,108,457.12
  5. Step 5: Solve for x
    x = 121,892,108,457.12/401,358.20
  6. Step 6: Final answer
    x = 303,699.06

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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.