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Finding the Fourth Proportional to 354,309,661.60, 531,464,492.40 and 99,008,029.60

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Solution

The fourth proportional to 354,309,661.60, 531,464,492.40 and 99,008,029.60 is: 148,512,044.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,309,661.60 : 531,464,492.40 = 99,008,029.60 : x
  2. Step 2: Convert to fraction form
    354,309,661.60/531,464,492.40 = 99,008,029.60/x
  3. Step 3: Cross multiply
    354,309,661.60x = 531,464,492.40 × 99,008,029.60
  4. Step 4: Simplify right side
    354,309,661.60x = 52,619,252,194,888,168
  5. Step 5: Solve for x
    x = 52,619,252,194,888,168/354,309,661.60
  6. Step 6: Final answer
    x = 148,512,044.40

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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.