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Finding the Fourth Proportional to 478,221.02, 660,262.62 and 297,203.06

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Solution

The fourth proportional to 478,221.02, 660,262.62 and 297,203.06 is: 410,337.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,221.02 : 660,262.62 = 297,203.06 : x
  2. Step 2: Convert to fraction form
    478,221.02/660,262.62 = 297,203.06/x
  3. Step 3: Cross multiply
    478,221.02x = 660,262.62 × 297,203.06
  4. Step 4: Simplify right side
    478,221.02x = 196,232,071,067.62
  5. Step 5: Solve for x
    x = 196,232,071,067.62/478,221.02
  6. Step 6: Final answer
    x = 410,337.61

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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.