Home / 429,977.60-644,966.40-167,321.60

Finding the Fourth Proportional to 429,977.60, 644,966.40 and 167,321.60

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Solution

The fourth proportional to 429,977.60, 644,966.40 and 167,321.60 is: 250,982.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,977.60 : 644,966.40 = 167,321.60 : x
  2. Step 2: Convert to fraction form
    429,977.60/644,966.40 = 167,321.60/x
  3. Step 3: Cross multiply
    429,977.60x = 644,966.40 × 167,321.60
  4. Step 4: Simplify right side
    429,977.60x = 107,916,809,994.24
  5. Step 5: Solve for x
    x = 107,916,809,994.24/429,977.60
  6. Step 6: Final answer
    x = 250,982.40

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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.