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Finding the Third Proportional to 139,041,958 and 210,352,470

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Solution

The third proportional to 139,041,958 and 210,352,470 is: 318,236,036.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,041,958 : 210,352,470 = 210,352,470 : x
  2. Step 2: Convert to fraction form
    139,041,958/210,352,470 = 210,352,470/x
  3. Step 3: Cross multiply
    139,041,958x = 210,352,470 × 210,352,470
  4. Step 4: Simplify right side
    139,041,958x = 44,248,161,635,100,896
  5. Step 5: Solve for x
    x = 44,248,161,635,100,896/139,041,958
  6. Step 6: Final answer
    x = 318,236,036.60

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.