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Finding the Third Proportional to 128,245,699 and 260,059,985

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Solution

The third proportional to 128,245,699 and 260,059,985 is: 527,356,444.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,245,699 : 260,059,985 = 260,059,985 : x
  2. Step 2: Convert to fraction form
    128,245,699/260,059,985 = 260,059,985/x
  3. Step 3: Cross multiply
    128,245,699x = 260,059,985 × 260,059,985
  4. Step 4: Simplify right side
    128,245,699x = 67,631,195,798,200,224
  5. Step 5: Solve for x
    x = 67,631,195,798,200,224/128,245,699
  6. Step 6: Final answer
    x = 527,356,444.12

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Why These Related Problems?

These problems maintain the same ratio (2.03) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.