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Finding the Fourth Proportional to 354,351.20, 531,526.79 and 105,033.20

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Solution

The fourth proportional to 354,351.20, 531,526.79 and 105,033.20 is: 157,549.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,351.20 : 531,526.79 = 105,033.20 : x
  2. Step 2: Convert to fraction form
    354,351.20/531,526.79 = 105,033.20/x
  3. Step 3: Cross multiply
    354,351.20x = 531,526.79 × 105,033.20
  4. Step 4: Simplify right side
    354,351.20x = 55,827,956,456.63
  5. Step 5: Solve for x
    x = 55,827,956,456.63/354,351.20
  6. Step 6: Final answer
    x = 157,549.79

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1.5x scale

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.