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Finding the Third Proportional to 153,948,979.69 and 318,811,636.13

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Solution

The third proportional to 153,948,979.69 and 318,811,636.13 is: 660,224,312.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,948,979.69 : 318,811,636.13 = 318,811,636.13 : x
  2. Step 2: Convert to fraction form
    153,948,979.69/318,811,636.13 = 318,811,636.13/x
  3. Step 3: Cross multiply
    153,948,979.69x = 318,811,636.13 × 318,811,636.13
  4. Step 4: Simplify right side
    153,948,979.69x = 101,640,859,328,699,408
  5. Step 5: Solve for x
    x = 101,640,859,328,699,408/153,948,979.69
  6. Step 6: Final answer
    x = 660,224,312.85

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Why These Related Problems?

These problems maintain the same ratio (2.07) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.