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Finding the Fourth Proportional to 385,718.96, 576,232.81 and 249,674.78

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Solution

The fourth proportional to 385,718.96, 576,232.81 and 249,674.78 is: 372,993.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,718.96 : 576,232.81 = 249,674.78 : x
  2. Step 2: Convert to fraction form
    385,718.96/576,232.81 = 249,674.78/x
  3. Step 3: Cross multiply
    385,718.96x = 576,232.81 × 249,674.78
  4. Step 4: Simplify right side
    385,718.96x = 143,870,800,065.53
  5. Step 5: Solve for x
    x = 143,870,800,065.53/385,718.96
  6. Step 6: Final answer
    x = 372,993.85

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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.