Home / 286,729.32-427,945.74-281,999.34

Finding the Fourth Proportional to 286,729.32, 427,945.74 and 281,999.34

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Solution

The fourth proportional to 286,729.32, 427,945.74 and 281,999.34 is: 420,886.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,729.32 : 427,945.74 = 281,999.34 : x
  2. Step 2: Convert to fraction form
    286,729.32/427,945.74 = 281,999.34/x
  3. Step 3: Cross multiply
    286,729.32x = 427,945.74 × 281,999.34
  4. Step 4: Simplify right side
    286,729.32x = 120,680,416,235.81
  5. Step 5: Solve for x
    x = 120,680,416,235.81/286,729.32
  6. Step 6: Final answer
    x = 420,886.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.