Home / 354,288,066.40-531,432,099.60-217,529,999.20

Finding the Fourth Proportional to 354,288,066.40, 531,432,099.60 and 217,529,999.20

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Solution

The fourth proportional to 354,288,066.40, 531,432,099.60 and 217,529,999.20 is: 326,294,998.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,288,066.40 : 531,432,099.60 = 217,529,999.20 : x
  2. Step 2: Convert to fraction form
    354,288,066.40/531,432,099.60 = 217,529,999.20/x
  3. Step 3: Cross multiply
    354,288,066.40x = 531,432,099.60 × 217,529,999.20
  4. Step 4: Simplify right side
    354,288,066.40x = 115,602,424,200,842,320
  5. Step 5: Solve for x
    x = 115,602,424,200,842,320/354,288,066.40
  6. Step 6: Final answer
    x = 326,294,998.80

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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.