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Finding the Fourth Proportional to 279,937,411.60, 419,906,117.40 and 98,118,979.60

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Solution

The fourth proportional to 279,937,411.60, 419,906,117.40 and 98,118,979.60 is: 147,178,469.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,937,411.60 : 419,906,117.40 = 98,118,979.60 : x
  2. Step 2: Convert to fraction form
    279,937,411.60/419,906,117.40 = 98,118,979.60/x
  3. Step 3: Cross multiply
    279,937,411.60x = 419,906,117.40 × 98,118,979.60
  4. Step 4: Simplify right side
    279,937,411.60x = 41,200,759,767,085,800
  5. Step 5: Solve for x
    x = 41,200,759,767,085,800/279,937,411.60
  6. Step 6: Final answer
    x = 147,178,469.40

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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.