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Finding the Fourth Proportional to 401,354.19, 553,874.14 and 220,065.66

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Solution

The fourth proportional to 401,354.19, 553,874.14 and 220,065.66 is: 303,693.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,354.19 : 553,874.14 = 220,065.66 : x
  2. Step 2: Convert to fraction form
    401,354.19/553,874.14 = 220,065.66/x
  3. Step 3: Cross multiply
    401,354.19x = 553,874.14 × 220,065.66
  4. Step 4: Simplify right side
    401,354.19x = 121,888,678,451.11
  5. Step 5: Solve for x
    x = 121,888,678,451.11/401,354.19
  6. Step 6: Final answer
    x = 303,693.55

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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.