Home / 385,129.53-531,299.65-249,207.35

Finding the Fourth Proportional to 385,129.53, 531,299.65 and 249,207.35

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Solution

The fourth proportional to 385,129.53, 531,299.65 and 249,207.35 is: 343,790.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,129.53 : 531,299.65 = 249,207.35 : x
  2. Step 2: Convert to fraction form
    385,129.53/531,299.65 = 249,207.35/x
  3. Step 3: Cross multiply
    385,129.53x = 531,299.65 × 249,207.35
  4. Step 4: Simplify right side
    385,129.53x = 132,403,775,258.14
  5. Step 5: Solve for x
    x = 132,403,775,258.14/385,129.53
  6. Step 6: Final answer
    x = 343,790.25

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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.