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Finding the Fourth Proportional to 283,193.70, 390,804.30 and 155,866.56

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Solution

The fourth proportional to 283,193.70, 390,804.30 and 155,866.56 is: 215,094.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,193.70 : 390,804.30 = 155,866.56 : x
  2. Step 2: Convert to fraction form
    283,193.70/390,804.30 = 155,866.56/x
  3. Step 3: Cross multiply
    283,193.70x = 390,804.30 × 155,866.56
  4. Step 4: Simplify right side
    283,193.70x = 60,913,321,874.21
  5. Step 5: Solve for x
    x = 60,913,321,874.21/283,193.70
  6. Step 6: Final answer
    x = 215,094.20

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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.