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Finding the Fourth Proportional to 565,321.22, 780,173.17 and 320,353.48

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Solution

The fourth proportional to 565,321.22, 780,173.17 and 320,353.48 is: 442,104.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    565,321.22 : 780,173.17 = 320,353.48 : x
  2. Step 2: Convert to fraction form
    565,321.22/780,173.17 = 320,353.48/x
  3. Step 3: Cross multiply
    565,321.22x = 780,173.17 × 320,353.48
  4. Step 4: Simplify right side
    565,321.22x = 249,931,190,186.46
  5. Step 5: Solve for x
    x = 249,931,190,186.46/565,321.22
  6. Step 6: Final answer
    x = 442,104.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.