Home / 692,145.96-1,038,212.40-218,831.28

Finding the Fourth Proportional to 692,145.96, 1,038,212.40 and 218,831.28

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Solution

The fourth proportional to 692,145.96, 1,038,212.40 and 218,831.28 is: 328,244.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    692,145.96 : 1,038,212.40 = 218,831.28 : x
  2. Step 2: Convert to fraction form
    692,145.96/1,038,212.40 = 218,831.28/x
  3. Step 3: Cross multiply
    692,145.96x = 1,038,212.40 × 218,831.28
  4. Step 4: Simplify right side
    692,145.96x = 227,193,348,403.87
  5. Step 5: Solve for x
    x = 227,193,348,403.87/692,145.96
  6. Step 6: Final answer
    x = 328,244.85

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Similar ratio
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1.5x scale

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.