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Finding the Fourth Proportional to 283,255.48, 390,892.62 and 155,931.09

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Solution

The fourth proportional to 283,255.48, 390,892.62 and 155,931.09 is: 215,184.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,255.48 : 390,892.62 = 155,931.09 : x
  2. Step 2: Convert to fraction form
    283,255.48/390,892.62 = 155,931.09/x
  3. Step 3: Cross multiply
    283,255.48x = 390,892.62 × 155,931.09
  4. Step 4: Simplify right side
    283,255.48x = 60,952,312,309.56
  5. Step 5: Solve for x
    x = 60,952,312,309.56/283,255.48
  6. Step 6: Final answer
    x = 215,184.94

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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.