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Finding the Fourth Proportional to 478,533.12, 660,422.24 and 357,464.21

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Solution

The fourth proportional to 478,533.12, 660,422.24 and 357,464.21 is: 493,335.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,533.12 : 660,422.24 = 357,464.21 : x
  2. Step 2: Convert to fraction form
    478,533.12/660,422.24 = 357,464.21/x
  3. Step 3: Cross multiply
    478,533.12x = 660,422.24 × 357,464.21
  4. Step 4: Simplify right side
    478,533.12x = 236,077,309,198.60
  5. Step 5: Solve for x
    x = 236,077,309,198.60/478,533.12
  6. Step 6: Final answer
    x = 493,335.36

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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.