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Finding the Fourth Proportional to 385,135.50, 531,308.04 and 249,213.27

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Solution

The fourth proportional to 385,135.50, 531,308.04 and 249,213.27 is: 343,798.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,135.50 : 531,308.04 = 249,213.27 : x
  2. Step 2: Convert to fraction form
    385,135.50/531,308.04 = 249,213.27/x
  3. Step 3: Cross multiply
    385,135.50x = 531,308.04 × 249,213.27
  4. Step 4: Simplify right side
    385,135.50x = 132,409,014,025.69
  5. Step 5: Solve for x
    x = 132,409,014,025.69/385,135.50
  6. Step 6: Final answer
    x = 343,798.52

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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.