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Finding the Fourth Proportional to 156,478,081.20, 219,522,810 and 156,478,081.20

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Solution

The fourth proportional to 156,478,081.20, 219,522,810 and 156,478,081.20 is: 219,522,810

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,478,081.20 : 219,522,810 = 156,478,081.20 : x
  2. Step 2: Convert to fraction form
    156,478,081.20/219,522,810 = 156,478,081.20/x
  3. Step 3: Cross multiply
    156,478,081.20x = 219,522,810 × 156,478,081.20
  4. Step 4: Simplify right side
    156,478,081.20x = 34,350,508,088,432,168
  5. Step 5: Solve for x
    x = 34,350,508,088,432,168/156,478,081.20
  6. Step 6: Final answer
    x = 219,522,810

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.