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Finding the Fourth Proportional to 380,297.12, 570,402.48 and 99,836.24

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Solution

The fourth proportional to 380,297.12, 570,402.48 and 99,836.24 is: 149,743.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,297.12 : 570,402.48 = 99,836.24 : x
  2. Step 2: Convert to fraction form
    380,297.12/570,402.48 = 99,836.24/x
  3. Step 3: Cross multiply
    380,297.12x = 570,402.48 × 99,836.24
  4. Step 4: Simplify right side
    380,297.12x = 56,946,838,889.88
  5. Step 5: Solve for x
    x = 56,946,838,889.88/380,297.12
  6. Step 6: Final answer
    x = 149,743.02

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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.