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Finding the Fourth Proportional to 553,809.66, 830,714.39 and 133,085.54

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Solution

The fourth proportional to 553,809.66, 830,714.39 and 133,085.54 is: 199,628.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,809.66 : 830,714.39 = 133,085.54 : x
  2. Step 2: Convert to fraction form
    553,809.66/830,714.39 = 133,085.54/x
  3. Step 3: Cross multiply
    553,809.66x = 830,714.39 × 133,085.54
  4. Step 4: Simplify right side
    553,809.66x = 110,556,073,178.92
  5. Step 5: Solve for x
    x = 110,556,073,178.92/553,809.66
  6. Step 6: Final answer
    x = 199,628.29

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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.