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Finding the Third Proportional to 178,931,889.50 and 391,357,603

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Solution

The third proportional to 178,931,889.50 and 391,357,603 is: 855,972,481.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,931,889.50 : 391,357,603 = 391,357,603 : x
  2. Step 2: Convert to fraction form
    178,931,889.50/391,357,603 = 391,357,603/x
  3. Step 3: Cross multiply
    178,931,889.50x = 391,357,603 × 391,357,603
  4. Step 4: Simplify right side
    178,931,889.50x = 153,160,773,425,905,600
  5. Step 5: Solve for x
    x = 153,160,773,425,905,600/178,931,889.50
  6. Step 6: Final answer
    x = 855,972,481.23

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.