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Finding the Fourth Proportional to 478,365.08, 660,147.18 and 274,424.90

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Solution

The fourth proportional to 478,365.08, 660,147.18 and 274,424.90 is: 378,708.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,365.08 : 660,147.18 = 274,424.90 : x
  2. Step 2: Convert to fraction form
    478,365.08/660,147.18 = 274,424.90/x
  3. Step 3: Cross multiply
    478,365.08x = 660,147.18 × 274,424.90
  4. Step 4: Simplify right side
    478,365.08x = 181,160,823,856.78
  5. Step 5: Solve for x
    x = 181,160,823,856.78/478,365.08
  6. Step 6: Final answer
    x = 378,708.30

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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.