Home / 385,296.75-531,701.55-213,214.60

Finding the Fourth Proportional to 385,296.75, 531,701.55 and 213,214.60

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Solution

The fourth proportional to 385,296.75, 531,701.55 and 213,214.60 is: 294,231.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,296.75 : 531,701.55 = 213,214.60 : x
  2. Step 2: Convert to fraction form
    385,296.75/531,701.55 = 213,214.60/x
  3. Step 3: Cross multiply
    385,296.75x = 531,701.55 × 213,214.60
  4. Step 4: Simplify right side
    385,296.75x = 113,366,533,967.26
  5. Step 5: Solve for x
    x = 113,366,533,967.26/385,296.75
  6. Step 6: Final answer
    x = 294,231.74

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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.