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Finding the Fourth Proportional to 283,026.76, 390,576.94 and 155,702.39

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Solution

The fourth proportional to 283,026.76, 390,576.94 and 155,702.39 is: 214,869.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,026.76 : 390,576.94 = 155,702.39 : x
  2. Step 2: Convert to fraction form
    283,026.76/390,576.94 = 155,702.39/x
  3. Step 3: Cross multiply
    283,026.76x = 390,576.94 × 155,702.39
  4. Step 4: Simplify right side
    283,026.76x = 60,813,760,694.75
  5. Step 5: Solve for x
    x = 60,813,760,694.75/283,026.76
  6. Step 6: Final answer
    x = 214,869.30

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1.5x scale

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.