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Finding the Fourth Proportional to 283,343, 391,013.34 and 156,018.29

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Solution

The fourth proportional to 283,343, 391,013.34 and 156,018.29 is: 215,305.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,343 : 391,013.34 = 156,018.29 : x
  2. Step 2: Convert to fraction form
    283,343/391,013.34 = 156,018.29/x
  3. Step 3: Cross multiply
    283,343x = 391,013.34 × 156,018.29
  4. Step 4: Simplify right side
    283,343x = 61,005,232,673.99
  5. Step 5: Solve for x
    x = 61,005,232,673.99/283,343
  6. Step 6: Final answer
    x = 215,305.24

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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.