Home / 385,031.22-531,129.76-223,868.45

Finding the Fourth Proportional to 385,031.22, 531,129.76 and 223,868.45

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Solution

The fourth proportional to 385,031.22, 531,129.76 and 223,868.45 is: 308,814.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,031.22 : 531,129.76 = 223,868.45 : x
  2. Step 2: Convert to fraction form
    385,031.22/531,129.76 = 223,868.45/x
  3. Step 3: Cross multiply
    385,031.22x = 531,129.76 × 223,868.45
  4. Step 4: Simplify right side
    385,031.22x = 118,903,196,120.07
  5. Step 5: Solve for x
    x = 118,903,196,120.07/385,031.22
  6. Step 6: Final answer
    x = 308,814.43

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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.