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Finding the Fourth Proportional to 356,313.06, 534,420.18 and 90,057.42

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Solution

The fourth proportional to 356,313.06, 534,420.18 and 90,057.42 is: 135,073.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,313.06 : 534,420.18 = 90,057.42 : x
  2. Step 2: Convert to fraction form
    356,313.06/534,420.18 = 90,057.42/x
  3. Step 3: Cross multiply
    356,313.06x = 534,420.18 × 90,057.42
  4. Step 4: Simplify right side
    356,313.06x = 48,128,502,606.74
  5. Step 5: Solve for x
    x = 48,128,502,606.74/356,313.06
  6. Step 6: Final answer
    x = 135,073.64

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.