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Finding the Third Proportional to 272,894.06 and 390,772.69

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Solution

The third proportional to 272,894.06 and 390,772.69 is: 559,569.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,894.06 : 390,772.69 = 390,772.69 : x
  2. Step 2: Convert to fraction form
    272,894.06/390,772.69 = 390,772.69/x
  3. Step 3: Cross multiply
    272,894.06x = 390,772.69 × 390,772.69
  4. Step 4: Simplify right side
    272,894.06x = 152,703,293,295.97
  5. Step 5: Solve for x
    x = 152,703,293,295.97/272,894.06
  6. Step 6: Final answer
    x = 559,569.86

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Why These Related Problems?

These problems maintain the same ratio (1.43) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.