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Finding the Fourth Proportional to 316,809.39, 436,846.71 and 201,906.18

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Solution

The fourth proportional to 316,809.39, 436,846.71 and 201,906.18 is: 278,407.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,809.39 : 436,846.71 = 201,906.18 : x
  2. Step 2: Convert to fraction form
    316,809.39/436,846.71 = 201,906.18/x
  3. Step 3: Cross multiply
    316,809.39x = 436,846.71 × 201,906.18
  4. Step 4: Simplify right side
    316,809.39x = 88,202,050,461.67
  5. Step 5: Solve for x
    x = 88,202,050,461.67/316,809.39
  6. Step 6: Final answer
    x = 278,407.31

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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.