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Finding the Third Proportional to 145,920 and 314,160

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Solution

The third proportional to 145,920 and 314,160 is: 676,374.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,920 : 314,160 = 314,160 : x
  2. Step 2: Convert to fraction form
    145,920/314,160 = 314,160/x
  3. Step 3: Cross multiply
    145,920x = 314,160 × 314,160
  4. Step 4: Simplify right side
    145,920x = 98,696,505,600
  5. Step 5: Solve for x
    x = 98,696,505,600/145,920
  6. Step 6: Final answer
    x = 676,374.08

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.