Home / 287,831.86-397,317.39-216,419.26

Finding the Fourth Proportional to 287,831.86, 397,317.39 and 216,419.26

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Solution

The fourth proportional to 287,831.86, 397,317.39 and 216,419.26 is: 298,740.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,831.86 : 397,317.39 = 216,419.26 : x
  2. Step 2: Convert to fraction form
    287,831.86/397,317.39 = 216,419.26/x
  3. Step 3: Cross multiply
    287,831.86x = 397,317.39 × 216,419.26
  4. Step 4: Simplify right side
    287,831.86x = 85,987,135,528.93
  5. Step 5: Solve for x
    x = 85,987,135,528.93/287,831.86
  6. Step 6: Final answer
    x = 298,740.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.