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Finding the Fourth Proportional to 351,242.40, 526,863.60 and 210,928.80

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Solution

The fourth proportional to 351,242.40, 526,863.60 and 210,928.80 is: 316,393.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,242.40 : 526,863.60 = 210,928.80 : x
  2. Step 2: Convert to fraction form
    351,242.40/526,863.60 = 210,928.80/x
  3. Step 3: Cross multiply
    351,242.40x = 526,863.60 × 210,928.80
  4. Step 4: Simplify right side
    351,242.40x = 111,130,706,911.68
  5. Step 5: Solve for x
    x = 111,130,706,911.68/351,242.40
  6. Step 6: Final answer
    x = 316,393.20

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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.