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Finding the Fourth Proportional to 379,090.83, 523,355.48 and 258,409.44

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Solution

The fourth proportional to 379,090.83, 523,355.48 and 258,409.44 is: 356,748.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,090.83 : 523,355.48 = 258,409.44 : x
  2. Step 2: Convert to fraction form
    379,090.83/523,355.48 = 258,409.44/x
  3. Step 3: Cross multiply
    379,090.83x = 523,355.48 × 258,409.44
  4. Step 4: Simplify right side
    379,090.83x = 135,239,996,184.72
  5. Step 5: Solve for x
    x = 135,239,996,184.72/379,090.83
  6. Step 6: Final answer
    x = 356,748.26

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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.