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Finding the Fourth Proportional to 553,402.20, 830,103.30 and 313,269.60

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Solution

The fourth proportional to 553,402.20, 830,103.30 and 313,269.60 is: 469,904.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,402.20 : 830,103.30 = 313,269.60 : x
  2. Step 2: Convert to fraction form
    553,402.20/830,103.30 = 313,269.60/x
  3. Step 3: Cross multiply
    553,402.20x = 830,103.30 × 313,269.60
  4. Step 4: Simplify right side
    553,402.20x = 260,046,128,749.68
  5. Step 5: Solve for x
    x = 260,046,128,749.68/553,402.20
  6. Step 6: Final answer
    x = 469,904.40

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Similar ratio
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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.