Home / 318,209.02-477,445.70-128,803.28

Finding the Fourth Proportional to 318,209.02, 477,445.70 and 128,803.28

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Solution

The fourth proportional to 318,209.02, 477,445.70 and 128,803.28 is: 193,258.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,209.02 : 477,445.70 = 128,803.28 : x
  2. Step 2: Convert to fraction form
    318,209.02/477,445.70 = 128,803.28/x
  3. Step 3: Cross multiply
    318,209.02x = 477,445.70 × 128,803.28
  4. Step 4: Simplify right side
    318,209.02x = 61,496,571,537.88
  5. Step 5: Solve for x
    x = 61,496,571,537.88/318,209.02
  6. Step 6: Final answer
    x = 193,258.42

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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.