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Finding the Fourth Proportional to 478,878.16, 660,856.34 and 264,025.90

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Solution

The fourth proportional to 478,878.16, 660,856.34 and 264,025.90 is: 364,358.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,878.16 : 660,856.34 = 264,025.90 : x
  2. Step 2: Convert to fraction form
    478,878.16/660,856.34 = 264,025.90/x
  3. Step 3: Cross multiply
    478,878.16x = 660,856.34 × 264,025.90
  4. Step 4: Simplify right side
    478,878.16x = 174,483,189,939.21
  5. Step 5: Solve for x
    x = 174,483,189,939.21/478,878.16
  6. Step 6: Final answer
    x = 364,358.21

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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.