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Finding the Fourth Proportional to 608,464.80, 913,215.60 and 272,023.20

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Solution

The fourth proportional to 608,464.80, 913,215.60 and 272,023.20 is: 408,266.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    608,464.80 : 913,215.60 = 272,023.20 : x
  2. Step 2: Convert to fraction form
    608,464.80/913,215.60 = 272,023.20/x
  3. Step 3: Cross multiply
    608,464.80x = 913,215.60 × 272,023.20
  4. Step 4: Simplify right side
    608,464.80x = 248,415,829,801.92
  5. Step 5: Solve for x
    x = 248,415,829,801.92/608,464.80
  6. Step 6: Final answer
    x = 408,266.56

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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.