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Finding the Fourth Proportional to 354,464.64, 489,037.68 and 227,210.40

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Solution

The fourth proportional to 354,464.64, 489,037.68 and 227,210.40 is: 313,471.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,464.64 : 489,037.68 = 227,210.40 : x
  2. Step 2: Convert to fraction form
    354,464.64/489,037.68 = 227,210.40/x
  3. Step 3: Cross multiply
    354,464.64x = 489,037.68 × 227,210.40
  4. Step 4: Simplify right side
    354,464.64x = 111,114,446,887.87
  5. Step 5: Solve for x
    x = 111,114,446,887.87/354,464.64
  6. Step 6: Final answer
    x = 313,471.17

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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.