Home / 385,271.31-531,645.52-215,472.63

Finding the Fourth Proportional to 385,271.31, 531,645.52 and 215,472.63

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Solution

The fourth proportional to 385,271.31, 531,645.52 and 215,472.63 is: 297,336.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,271.31 : 531,645.52 = 215,472.63 : x
  2. Step 2: Convert to fraction form
    385,271.31/531,645.52 = 215,472.63/x
  3. Step 3: Cross multiply
    385,271.31x = 531,645.52 × 215,472.63
  4. Step 4: Simplify right side
    385,271.31x = 114,555,058,422.12
  5. Step 5: Solve for x
    x = 114,555,058,422.12/385,271.31
  6. Step 6: Final answer
    x = 297,336.07

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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.