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Finding the Fourth Proportional to 286,685.42, 427,609.39 and 248,948.74

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Solution

The fourth proportional to 286,685.42, 427,609.39 and 248,948.74 is: 371,322.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,685.42 : 427,609.39 = 248,948.74 : x
  2. Step 2: Convert to fraction form
    286,685.42/427,609.39 = 248,948.74/x
  3. Step 3: Cross multiply
    286,685.42x = 427,609.39 × 248,948.74
  4. Step 4: Simplify right side
    286,685.42x = 106,452,817,161.27
  5. Step 5: Solve for x
    x = 106,452,817,161.27/286,685.42
  6. Step 6: Final answer
    x = 371,322.74

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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.