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Finding the Fourth Proportional to 318,425.37, 439,424.42 and 180,630.47

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Solution

The fourth proportional to 318,425.37, 439,424.42 and 180,630.47 is: 249,268.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,425.37 : 439,424.42 = 180,630.47 : x
  2. Step 2: Convert to fraction form
    318,425.37/439,424.42 = 180,630.47/x
  3. Step 3: Cross multiply
    318,425.37x = 439,424.42 × 180,630.47
  4. Step 4: Simplify right side
    318,425.37x = 79,373,439,709.49
  5. Step 5: Solve for x
    x = 79,373,439,709.49/318,425.37
  6. Step 6: Final answer
    x = 249,268.58

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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.