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Finding the Fourth Proportional to 345,610.80, 485,254.80 and 345,610.80

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Solution

The fourth proportional to 345,610.80, 485,254.80 and 345,610.80 is: 485,254.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,610.80 : 485,254.80 = 345,610.80 : x
  2. Step 2: Convert to fraction form
    345,610.80/485,254.80 = 345,610.80/x
  3. Step 3: Cross multiply
    345,610.80x = 485,254.80 × 345,610.80
  4. Step 4: Simplify right side
    345,610.80x = 167,709,299,631.84
  5. Step 5: Solve for x
    x = 167,709,299,631.84/345,610.80
  6. Step 6: Final answer
    x = 485,254.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.