Home / 285,320.34-428,009.03-105,453.02

Finding the Fourth Proportional to 285,320.34, 428,009.03 and 105,453.02

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Solution

The fourth proportional to 285,320.34, 428,009.03 and 105,453.02 is: 158,190.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,320.34 : 428,009.03 = 105,453.02 : x
  2. Step 2: Convert to fraction form
    285,320.34/428,009.03 = 105,453.02/x
  3. Step 3: Cross multiply
    285,320.34x = 428,009.03 × 105,453.02
  4. Step 4: Simplify right side
    285,320.34x = 45,134,845,738.98
  5. Step 5: Solve for x
    x = 45,134,845,738.98/285,320.34
  6. Step 6: Final answer
    x = 158,190.07

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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.