Home / 380,437.20-570,612.60-99,982.80

Finding the Fourth Proportional to 380,437.20, 570,612.60 and 99,982.80

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Solution

The fourth proportional to 380,437.20, 570,612.60 and 99,982.80 is: 149,962.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,437.20 : 570,612.60 = 99,982.80 : x
  2. Step 2: Convert to fraction form
    380,437.20/570,612.60 = 99,982.80/x
  3. Step 3: Cross multiply
    380,437.20x = 570,612.60 × 99,982.80
  4. Step 4: Simplify right side
    380,437.20x = 57,051,445,463.28
  5. Step 5: Solve for x
    x = 57,051,445,463.28/380,437.20
  6. Step 6: Final answer
    x = 149,962.85

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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.