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Finding the Fourth Proportional to 553,809.92, 830,714.77 and 133,085.79

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Solution

The fourth proportional to 553,809.92, 830,714.77 and 133,085.79 is: 199,628.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,809.92 : 830,714.77 = 133,085.79 : x
  2. Step 2: Convert to fraction form
    553,809.92/830,714.77 = 133,085.79/x
  3. Step 3: Cross multiply
    553,809.92x = 830,714.77 × 133,085.79
  4. Step 4: Simplify right side
    553,809.92x = 110,556,330,764.69
  5. Step 5: Solve for x
    x = 110,556,330,764.69/553,809.92
  6. Step 6: Final answer
    x = 199,628.66

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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.