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Finding the Fourth Proportional to 401,116.99, 553,542.23 and 219,835.64

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Solution

The fourth proportional to 401,116.99, 553,542.23 and 219,835.64 is: 303,373.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,116.99 : 553,542.23 = 219,835.64 : x
  2. Step 2: Convert to fraction form
    401,116.99/553,542.23 = 219,835.64/x
  3. Step 3: Cross multiply
    401,116.99x = 553,542.23 × 219,835.64
  4. Step 4: Simplify right side
    401,116.99x = 121,688,310,683.76
  5. Step 5: Solve for x
    x = 121,688,310,683.76/401,116.99
  6. Step 6: Final answer
    x = 303,373.62

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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.