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Finding the Fourth Proportional to 553,808.72, 830,712.99 and 133,084.60

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Solution

The fourth proportional to 553,808.72, 830,712.99 and 133,084.60 is: 199,626.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,808.72 : 830,712.99 = 133,084.60 : x
  2. Step 2: Convert to fraction form
    553,808.72/830,712.99 = 133,084.60/x
  3. Step 3: Cross multiply
    553,808.72x = 830,712.99 × 133,084.60
  4. Step 4: Simplify right side
    553,808.72x = 110,555,105,988.95
  5. Step 5: Solve for x
    x = 110,555,105,988.95/553,808.72
  6. Step 6: Final answer
    x = 199,626.88

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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.