Home / 385,530.12-532,010.70-215,731.44

Finding the Fourth Proportional to 385,530.12, 532,010.70 and 215,731.44

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Solution

The fourth proportional to 385,530.12, 532,010.70 and 215,731.44 is: 297,697.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,530.12 : 532,010.70 = 215,731.44 : x
  2. Step 2: Convert to fraction form
    385,530.12/532,010.70 = 215,731.44/x
  3. Step 3: Cross multiply
    385,530.12x = 532,010.70 × 215,731.44
  4. Step 4: Simplify right side
    385,530.12x = 114,771,434,406.41
  5. Step 5: Solve for x
    x = 114,771,434,406.41/385,530.12
  6. Step 6: Final answer
    x = 297,697.71

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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.