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Finding the Fourth Proportional to 283,116.25, 390,703.16 and 155,794.58

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Solution

The fourth proportional to 283,116.25, 390,703.16 and 155,794.58 is: 214,998.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,116.25 : 390,703.16 = 155,794.58 : x
  2. Step 2: Convert to fraction form
    283,116.25/390,703.16 = 155,794.58/x
  3. Step 3: Cross multiply
    283,116.25x = 390,703.16 × 155,794.58
  4. Step 4: Simplify right side
    283,116.25x = 60,869,434,716.87
  5. Step 5: Solve for x
    x = 60,869,434,716.87/283,116.25
  6. Step 6: Final answer
    x = 214,998.03

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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.