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Finding the Fourth Proportional to 283,039.62, 390,594.68 and 155,712.48

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Solution

The fourth proportional to 283,039.62, 390,594.68 and 155,712.48 is: 214,883.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,039.62 : 390,594.68 = 155,712.48 : x
  2. Step 2: Convert to fraction form
    283,039.62/390,594.68 = 155,712.48/x
  3. Step 3: Cross multiply
    283,039.62x = 390,594.68 × 155,712.48
  4. Step 4: Simplify right side
    283,039.62x = 60,820,466,297.61
  5. Step 5: Solve for x
    x = 60,820,466,297.61/283,039.62
  6. Step 6: Final answer
    x = 214,883.22

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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.