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Finding the Fourth Proportional to 385,081.34, 531,235.45 and 249,159.59

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Solution

The fourth proportional to 385,081.34, 531,235.45 and 249,159.59 is: 343,725.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,081.34 : 531,235.45 = 249,159.59 : x
  2. Step 2: Convert to fraction form
    385,081.34/531,235.45 = 249,159.59/x
  3. Step 3: Cross multiply
    385,081.34x = 531,235.45 × 249,159.59
  4. Step 4: Simplify right side
    385,081.34x = 132,362,405,669.67
  5. Step 5: Solve for x
    x = 132,362,405,669.67/385,081.34
  6. Step 6: Final answer
    x = 343,725.84

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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.