Home / 338,111,998.80-507,167,998.20-315,269,221.20

Finding the Fourth Proportional to 338,111,998.80, 507,167,998.20 and 315,269,221.20

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Solution

The fourth proportional to 338,111,998.80, 507,167,998.20 and 315,269,221.20 is: 472,903,831.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    338,111,998.80 : 507,167,998.20 = 315,269,221.20 : x
  2. Step 2: Convert to fraction form
    338,111,998.80/507,167,998.20 = 315,269,221.20/x
  3. Step 3: Cross multiply
    338,111,998.80x = 507,167,998.20 × 315,269,221.20
  4. Step 4: Simplify right side
    338,111,998.80x = 159,894,459,810,076,992
  5. Step 5: Solve for x
    x = 159,894,459,810,076,992/338,111,998.80
  6. Step 6: Final answer
    x = 472,903,831.80

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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.