Home / 385,479.11-531,967.47-211,046.40

Finding the Fourth Proportional to 385,479.11, 531,967.47 and 211,046.40

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Solution

The fourth proportional to 385,479.11, 531,967.47 and 211,046.40 is: 291,247.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,479.11 : 531,967.47 = 211,046.40 : x
  2. Step 2: Convert to fraction form
    385,479.11/531,967.47 = 211,046.40/x
  3. Step 3: Cross multiply
    385,479.11x = 531,967.47 × 211,046.40
  4. Step 4: Simplify right side
    385,479.11x = 112,269,819,460.61
  5. Step 5: Solve for x
    x = 112,269,819,460.61/385,479.11
  6. Step 6: Final answer
    x = 291,247.48

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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.