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Finding the Third Proportional to 153,991,047 and 320,720,276

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Solution

The third proportional to 153,991,047 and 320,720,276 is: 667,970,621.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,991,047 : 320,720,276 = 320,720,276 : x
  2. Step 2: Convert to fraction form
    153,991,047/320,720,276 = 320,720,276/x
  3. Step 3: Cross multiply
    153,991,047x = 320,720,276 × 320,720,276
  4. Step 4: Simplify right side
    153,991,047x = 102,861,495,437,516,176
  5. Step 5: Solve for x
    x = 102,861,495,437,516,176/153,991,047
  6. Step 6: Final answer
    x = 667,970,621.94

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Why These Related Problems?

These problems maintain the same ratio (2.08) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.