Home / 385,235.06-531,595.51-215,436.38

Finding the Fourth Proportional to 385,235.06, 531,595.51 and 215,436.38

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Solution

The fourth proportional to 385,235.06, 531,595.51 and 215,436.38 is: 297,286.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,235.06 : 531,595.51 = 215,436.38 : x
  2. Step 2: Convert to fraction form
    385,235.06/531,595.51 = 215,436.38/x
  3. Step 3: Cross multiply
    385,235.06x = 531,595.51 × 215,436.38
  4. Step 4: Simplify right side
    385,235.06x = 114,525,009,102.09
  5. Step 5: Solve for x
    x = 114,525,009,102.09/385,235.06
  6. Step 6: Final answer
    x = 297,286.05

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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.