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Finding the Fourth Proportional to 354,459.78, 488,877.93 and 227,147.22

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Solution

The fourth proportional to 354,459.78, 488,877.93 and 227,147.22 is: 313,285.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,459.78 : 488,877.93 = 227,147.22 : x
  2. Step 2: Convert to fraction form
    354,459.78/488,877.93 = 227,147.22/x
  3. Step 3: Cross multiply
    354,459.78x = 488,877.93 × 227,147.22
  4. Step 4: Simplify right side
    354,459.78x = 111,047,262,718.86
  5. Step 5: Solve for x
    x = 111,047,262,718.86/354,459.78
  6. Step 6: Final answer
    x = 313,285.93

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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.