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Finding the Fourth Proportional to 315,264.81, 434,951.78 and 242,689.91

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Solution

The fourth proportional to 315,264.81, 434,951.78 and 242,689.91 is: 334,824.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,264.81 : 434,951.78 = 242,689.91 : x
  2. Step 2: Convert to fraction form
    315,264.81/434,951.78 = 242,689.91/x
  3. Step 3: Cross multiply
    315,264.81x = 434,951.78 × 242,689.91
  4. Step 4: Simplify right side
    315,264.81x = 105,558,404,954.33
  5. Step 5: Solve for x
    x = 105,558,404,954.33/315,264.81
  6. Step 6: Final answer
    x = 334,824.57

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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.