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Finding the Fourth Proportional to 308,902,746.90, 463,129,464.39 and 145,056,074.88

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Solution

The fourth proportional to 308,902,746.90, 463,129,464.39 and 145,056,074.88 is: 217,478,617.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,902,746.90 : 463,129,464.39 = 145,056,074.88 : x
  2. Step 2: Convert to fraction form
    308,902,746.90/463,129,464.39 = 145,056,074.88/x
  3. Step 3: Cross multiply
    308,902,746.90x = 463,129,464.39 × 145,056,074.88
  4. Step 4: Simplify right side
    308,902,746.90x = 67,179,742,265,690,128
  5. Step 5: Solve for x
    x = 67,179,742,265,690,128/308,902,746.90
  6. Step 6: Final answer
    x = 217,478,617.27

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.