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Finding the Fourth Proportional to 553,805.51, 830,708.18 and 133,081.39

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Solution

The fourth proportional to 553,805.51, 830,708.18 and 133,081.39 is: 199,622.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,805.51 : 830,708.18 = 133,081.39 : x
  2. Step 2: Convert to fraction form
    553,805.51/830,708.18 = 133,081.39/x
  3. Step 3: Cross multiply
    553,805.51x = 830,708.18 × 133,081.39
  4. Step 4: Simplify right side
    553,805.51x = 110,551,799,278.77
  5. Step 5: Solve for x
    x = 110,551,799,278.77/553,805.51
  6. Step 6: Final answer
    x = 199,622.06

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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.