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Finding the Fourth Proportional to 230,216.40, 317,713.68 and 139,580.64

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Solution

The fourth proportional to 230,216.40, 317,713.68 and 139,580.64 is: 192,630.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,216.40 : 317,713.68 = 139,580.64 : x
  2. Step 2: Convert to fraction form
    230,216.40/317,713.68 = 139,580.64/x
  3. Step 3: Cross multiply
    230,216.40x = 317,713.68 × 139,580.64
  4. Step 4: Simplify right side
    230,216.40x = 44,346,678,791.16
  5. Step 5: Solve for x
    x = 44,346,678,791.16/230,216.40
  6. Step 6: Final answer
    x = 192,630.41

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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.