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Finding the Fourth Proportional to 298,934,793.60, 448,402,190.40 and 137,376,729.60

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Solution

The fourth proportional to 298,934,793.60, 448,402,190.40 and 137,376,729.60 is: 206,065,094.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,934,793.60 : 448,402,190.40 = 137,376,729.60 : x
  2. Step 2: Convert to fraction form
    298,934,793.60/448,402,190.40 = 137,376,729.60/x
  3. Step 3: Cross multiply
    298,934,793.60x = 448,402,190.40 × 137,376,729.60
  4. Step 4: Simplify right side
    298,934,793.60x = 61,600,026,462,628,512
  5. Step 5: Solve for x
    x = 61,600,026,462,628,512/298,934,793.60
  6. Step 6: Final answer
    x = 206,065,094.40

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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.