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Finding the Fourth Proportional to 385,718.76, 532,168.06 and 249,856.85

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Solution

The fourth proportional to 385,718.76, 532,168.06 and 249,856.85 is: 344,722.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,718.76 : 532,168.06 = 249,856.85 : x
  2. Step 2: Convert to fraction form
    385,718.76/532,168.06 = 249,856.85/x
  3. Step 3: Cross multiply
    385,718.76x = 532,168.06 × 249,856.85
  4. Step 4: Simplify right side
    385,718.76x = 132,965,831,232.09
  5. Step 5: Solve for x
    x = 132,965,831,232.09/385,718.76
  6. Step 6: Final answer
    x = 344,722.23

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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.