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Finding the Third Proportional to 128,719,224 and 281,502,144

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Solution

The third proportional to 128,719,224 and 281,502,144 is: 615,630,320.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,719,224 : 281,502,144 = 281,502,144 : x
  2. Step 2: Convert to fraction form
    128,719,224/281,502,144 = 281,502,144/x
  3. Step 3: Cross multiply
    128,719,224x = 281,502,144 × 281,502,144
  4. Step 4: Simplify right side
    128,719,224x = 79,243,457,076,596,736
  5. Step 5: Solve for x
    x = 79,243,457,076,596,736/128,719,224
  6. Step 6: Final answer
    x = 615,630,320.12

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.