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Finding the Third Proportional to 251,930,020 and 391,010,466

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Solution

The third proportional to 251,930,020 and 391,010,466 is: 606,871,640.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,930,020 : 391,010,466 = 391,010,466 : x
  2. Step 2: Convert to fraction form
    251,930,020/391,010,466 = 391,010,466/x
  3. Step 3: Cross multiply
    251,930,020x = 391,010,466 × 391,010,466
  4. Step 4: Simplify right side
    251,930,020x = 152,889,184,521,537,152
  5. Step 5: Solve for x
    x = 152,889,184,521,537,152/251,930,020
  6. Step 6: Final answer
    x = 606,871,640.47

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.