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Finding the Fourth Proportional to 354,441.74, 488,853.14 and 227,129.18

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Solution

The fourth proportional to 354,441.74, 488,853.14 and 227,129.18 is: 313,261.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,441.74 : 488,853.14 = 227,129.18 : x
  2. Step 2: Convert to fraction form
    354,441.74/488,853.14 = 227,129.18/x
  3. Step 3: Cross multiply
    354,441.74x = 488,853.14 × 227,129.18
  4. Step 4: Simplify right side
    354,441.74x = 111,032,809,248.71
  5. Step 5: Solve for x
    x = 111,032,809,248.71/354,441.74
  6. Step 6: Final answer
    x = 313,261.10

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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.