Home / 385,500.06-531,990.79-213,429.94

Finding the Fourth Proportional to 385,500.06, 531,990.79 and 213,429.94

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Solution

The fourth proportional to 385,500.06, 531,990.79 and 213,429.94 is: 294,533.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,500.06 : 531,990.79 = 213,429.94 : x
  2. Step 2: Convert to fraction form
    385,500.06/531,990.79 = 213,429.94/x
  3. Step 3: Cross multiply
    385,500.06x = 531,990.79 × 213,429.94
  4. Step 4: Simplify right side
    385,500.06x = 113,542,760,526.70
  5. Step 5: Solve for x
    x = 113,542,760,526.70/385,500.06
  6. Step 6: Final answer
    x = 294,533.70

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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.