Home / 385,031.26-531,129.87-223,868.50

Finding the Fourth Proportional to 385,031.26, 531,129.87 and 223,868.50

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Solution

The fourth proportional to 385,031.26, 531,129.87 and 223,868.50 is: 308,814.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,031.26 : 531,129.87 = 223,868.50 : x
  2. Step 2: Convert to fraction form
    385,031.26/531,129.87 = 223,868.50/x
  3. Step 3: Cross multiply
    385,031.26x = 531,129.87 × 223,868.50
  4. Step 4: Simplify right side
    385,031.26x = 118,903,247,302.10
  5. Step 5: Solve for x
    x = 118,903,247,302.10/385,031.26
  6. Step 6: Final answer
    x = 308,814.53

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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.