Home / 338,831.50-507,569.40-203,821.12

Finding the Fourth Proportional to 338,831.50, 507,569.40 and 203,821.12

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Solution

The fourth proportional to 338,831.50, 507,569.40 and 203,821.12 is: 305,323.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    338,831.50 : 507,569.40 = 203,821.12 : x
  2. Step 2: Convert to fraction form
    338,831.50/507,569.40 = 203,821.12/x
  3. Step 3: Cross multiply
    338,831.50x = 507,569.40 × 203,821.12
  4. Step 4: Simplify right side
    338,831.50x = 103,453,362,893.79
  5. Step 5: Solve for x
    x = 103,453,362,893.79/338,831.50
  6. Step 6: Final answer
    x = 305,323.92

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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.