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Finding the Third Proportional to 156,931,548 and 215,424,171

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Solution

The third proportional to 156,931,548 and 215,424,171 is: 295,718,573.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,931,548 : 215,424,171 = 215,424,171 : x
  2. Step 2: Convert to fraction form
    156,931,548/215,424,171 = 215,424,171/x
  3. Step 3: Cross multiply
    156,931,548x = 215,424,171 × 215,424,171
  4. Step 4: Simplify right side
    156,931,548x = 46,407,573,451,037,240
  5. Step 5: Solve for x
    x = 46,407,573,451,037,240/156,931,548
  6. Step 6: Final answer
    x = 295,718,573.11

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.