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Finding the Third Proportional to 257,003,496 and 391,528,242

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Solution

The third proportional to 257,003,496 and 391,528,242 is: 596,468,011.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,003,496 : 391,528,242 = 391,528,242 : x
  2. Step 2: Convert to fraction form
    257,003,496/391,528,242 = 391,528,242/x
  3. Step 3: Cross multiply
    257,003,496x = 391,528,242 × 391,528,242
  4. Step 4: Simplify right side
    257,003,496x = 153,294,364,283,610,560
  5. Step 5: Solve for x
    x = 153,294,364,283,610,560/257,003,496
  6. Step 6: Final answer
    x = 596,468,011.80

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Why These Related Problems?

These problems maintain the same ratio (1.52) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.