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Finding the Fourth Proportional to 553,889.34, 830,974.12 and 154,529.82

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Solution

The fourth proportional to 553,889.34, 830,974.12 and 154,529.82 is: 231,833.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,889.34 : 830,974.12 = 154,529.82 : x
  2. Step 2: Convert to fraction form
    553,889.34/830,974.12 = 154,529.82/x
  3. Step 3: Cross multiply
    553,889.34x = 830,974.12 × 154,529.82
  4. Step 4: Simplify right side
    553,889.34x = 128,410,281,188.26
  5. Step 5: Solve for x
    x = 128,410,281,188.26/553,889.34
  6. Step 6: Final answer
    x = 231,833.82

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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.