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Finding the Fourth Proportional to 230,031.79, 317,458.37 and 139,395.69

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Solution

The fourth proportional to 230,031.79, 317,458.37 and 139,395.69 is: 192,374.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,031.79 : 317,458.37 = 139,395.69 : x
  2. Step 2: Convert to fraction form
    230,031.79/317,458.37 = 139,395.69/x
  3. Step 3: Cross multiply
    230,031.79x = 317,458.37 × 139,395.69
  4. Step 4: Simplify right side
    230,031.79x = 44,252,328,880.91
  5. Step 5: Solve for x
    x = 44,252,328,880.91/230,031.79
  6. Step 6: Final answer
    x = 192,374.84

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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.