Home / 476,938.80-715,408.20-121,980.60

Finding the Fourth Proportional to 476,938.80, 715,408.20 and 121,980.60

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Solution

The fourth proportional to 476,938.80, 715,408.20 and 121,980.60 is: 182,970.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    476,938.80 : 715,408.20 = 121,980.60 : x
  2. Step 2: Convert to fraction form
    476,938.80/715,408.20 = 121,980.60/x
  3. Step 3: Cross multiply
    476,938.80x = 715,408.20 × 121,980.60
  4. Step 4: Simplify right side
    476,938.80x = 87,265,921,480.92
  5. Step 5: Solve for x
    x = 87,265,921,480.92/476,938.80
  6. Step 6: Final answer
    x = 182,970.90

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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.