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Finding the Fourth Proportional to 384,809.56, 531,040.54 and 212,724.76

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Solution

The fourth proportional to 384,809.56, 531,040.54 and 212,724.76 is: 293,562.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,809.56 : 531,040.54 = 212,724.76 : x
  2. Step 2: Convert to fraction form
    384,809.56/531,040.54 = 212,724.76/x
  3. Step 3: Cross multiply
    384,809.56x = 531,040.54 × 212,724.76
  4. Step 4: Simplify right side
    384,809.56x = 112,965,471,421.77
  5. Step 5: Solve for x
    x = 112,965,471,421.77/384,809.56
  6. Step 6: Final answer
    x = 293,562.02

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.