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Finding the Fourth Proportional to 385,131.52, 531,302.40 and 249,209.32

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Solution

The fourth proportional to 385,131.52, 531,302.40 and 249,209.32 is: 343,792.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,131.52 : 531,302.40 = 249,209.32 : x
  2. Step 2: Convert to fraction form
    385,131.52/531,302.40 = 249,209.32/x
  3. Step 3: Cross multiply
    385,131.52x = 531,302.40 × 249,209.32
  4. Step 4: Simplify right side
    385,131.52x = 132,405,509,818.37
  5. Step 5: Solve for x
    x = 132,405,509,818.37/385,131.52
  6. Step 6: Final answer
    x = 343,792.97

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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.