Home / 385,374.72-531,826.56-215,619.84

Finding the Fourth Proportional to 385,374.72, 531,826.56 and 215,619.84

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Solution

The fourth proportional to 385,374.72, 531,826.56 and 215,619.84 is: 297,560.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,374.72 : 531,826.56 = 215,619.84 : x
  2. Step 2: Convert to fraction form
    385,374.72/531,826.56 = 215,619.84/x
  3. Step 3: Cross multiply
    385,374.72x = 531,826.56 × 215,619.84
  4. Step 4: Simplify right side
    385,374.72x = 114,672,357,774.95
  5. Step 5: Solve for x
    x = 114,672,357,774.95/385,374.72
  6. Step 6: Final answer
    x = 297,560.66

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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.