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Finding the Fourth Proportional to 543,254.80, 815,496.60 and 321,763.60

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Solution

The fourth proportional to 543,254.80, 815,496.60 and 321,763.60 is: 483,009.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,254.80 : 815,496.60 = 321,763.60 : x
  2. Step 2: Convert to fraction form
    543,254.80/815,496.60 = 321,763.60/x
  3. Step 3: Cross multiply
    543,254.80x = 815,496.60 × 321,763.60
  4. Step 4: Simplify right side
    543,254.80x = 262,397,121,803.76
  5. Step 5: Solve for x
    x = 262,397,121,803.76/543,254.80
  6. Step 6: Final answer
    x = 483,009.30

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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.