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Finding the Fourth Proportional to 385,717.96, 576,231.32 and 249,673.78

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Solution

The fourth proportional to 385,717.96, 576,231.32 and 249,673.78 is: 372,992.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,717.96 : 576,231.32 = 249,673.78 : x
  2. Step 2: Convert to fraction form
    385,717.96/576,231.32 = 249,673.78/x
  3. Step 3: Cross multiply
    385,717.96x = 576,231.32 × 249,673.78
  4. Step 4: Simplify right side
    385,717.96x = 143,869,851,818.79
  5. Step 5: Solve for x
    x = 143,869,851,818.79/385,717.96
  6. Step 6: Final answer
    x = 372,992.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.