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Finding the Fourth Proportional to 380,056.20, 570,102.66 and 99,573.72

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Solution

The fourth proportional to 380,056.20, 570,102.66 and 99,573.72 is: 149,365.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,056.20 : 570,102.66 = 99,573.72 : x
  2. Step 2: Convert to fraction form
    380,056.20/570,102.66 = 99,573.72/x
  3. Step 3: Cross multiply
    380,056.20x = 570,102.66 × 99,573.72
  4. Step 4: Simplify right side
    380,056.20x = 56,767,242,638.10
  5. Step 5: Solve for x
    x = 56,767,242,638.10/380,056.20
  6. Step 6: Final answer
    x = 149,365.39

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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.