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Finding the Fourth Proportional to 315,955.17, 436,026.51 and 188,704.17

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Solution

The fourth proportional to 315,955.17, 436,026.51 and 188,704.17 is: 260,416.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,955.17 : 436,026.51 = 188,704.17 : x
  2. Step 2: Convert to fraction form
    315,955.17/436,026.51 = 188,704.17/x
  3. Step 3: Cross multiply
    315,955.17x = 436,026.51 × 188,704.17
  4. Step 4: Simplify right side
    315,955.17x = 82,280,020,667.55
  5. Step 5: Solve for x
    x = 82,280,020,667.55/315,955.17
  6. Step 6: Final answer
    x = 260,416.76

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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.