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Finding the Fourth Proportional to 323,539.20, 485,222.40 and 98,899.20

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Solution

The fourth proportional to 323,539.20, 485,222.40 and 98,899.20 is: 148,322.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,539.20 : 485,222.40 = 98,899.20 : x
  2. Step 2: Convert to fraction form
    323,539.20/485,222.40 = 98,899.20/x
  3. Step 3: Cross multiply
    323,539.20x = 485,222.40 × 98,899.20
  4. Step 4: Simplify right side
    323,539.20x = 47,988,107,182.08
  5. Step 5: Solve for x
    x = 47,988,107,182.08/323,539.20
  6. Step 6: Final answer
    x = 148,322.39

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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.