Home / 385,359.51-531,785.12-213,284.53

Finding the Fourth Proportional to 385,359.51, 531,785.12 and 213,284.53

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Solution

The fourth proportional to 385,359.51, 531,785.12 and 213,284.53 is: 294,326.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,359.51 : 531,785.12 = 213,284.53 : x
  2. Step 2: Convert to fraction form
    385,359.51/531,785.12 = 213,284.53/x
  3. Step 3: Cross multiply
    385,359.51x = 531,785.12 × 213,284.53
  4. Step 4: Simplify right side
    385,359.51x = 113,421,539,380.19
  5. Step 5: Solve for x
    x = 113,421,539,380.19/385,359.51
  6. Step 6: Final answer
    x = 294,326.56

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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.