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Finding the Fourth Proportional to 384,770.02, 530,980.94 and 215,004.12

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Solution

The fourth proportional to 384,770.02, 530,980.94 and 215,004.12 is: 296,704.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,770.02 : 530,980.94 = 215,004.12 : x
  2. Step 2: Convert to fraction form
    384,770.02/530,980.94 = 215,004.12/x
  3. Step 3: Cross multiply
    384,770.02x = 530,980.94 × 215,004.12
  4. Step 4: Simplify right side
    384,770.02x = 114,163,089,741.47
  5. Step 5: Solve for x
    x = 114,163,089,741.47/384,770.02
  6. Step 6: Final answer
    x = 296,704.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.