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Finding the Fourth Proportional to 553,808.91, 830,713.27 and 133,084.79

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Solution

The fourth proportional to 553,808.91, 830,713.27 and 133,084.79 is: 199,627.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,808.91 : 830,713.27 = 133,084.79 : x
  2. Step 2: Convert to fraction form
    553,808.91/830,713.27 = 133,084.79/x
  3. Step 3: Cross multiply
    553,808.91x = 830,713.27 × 133,084.79
  4. Step 4: Simplify right side
    553,808.91x = 110,555,301,088.16
  5. Step 5: Solve for x
    x = 110,555,301,088.16/553,808.91
  6. Step 6: Final answer
    x = 199,627.16

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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.