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Finding the Fourth Proportional to 230,415.66, 317,980.35 and 134,913.42

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Solution

The fourth proportional to 230,415.66, 317,980.35 and 134,913.42 is: 186,184.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,415.66 : 317,980.35 = 134,913.42 : x
  2. Step 2: Convert to fraction form
    230,415.66/317,980.35 = 134,913.42/x
  3. Step 3: Cross multiply
    230,415.66x = 317,980.35 × 134,913.42
  4. Step 4: Simplify right side
    230,415.66x = 42,899,816,511.30
  5. Step 5: Solve for x
    x = 42,899,816,511.30/230,415.66
  6. Step 6: Final answer
    x = 186,184.47

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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.