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Finding the Fourth Proportional to 226,011.90, 311,931.27 and 130,511.10

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Solution

The fourth proportional to 226,011.90, 311,931.27 and 130,511.10 is: 180,125.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    226,011.90 : 311,931.27 = 130,511.10 : x
  2. Step 2: Convert to fraction form
    226,011.90/311,931.27 = 130,511.10/x
  3. Step 3: Cross multiply
    226,011.90x = 311,931.27 × 130,511.10
  4. Step 4: Simplify right side
    226,011.90x = 40,710,493,172.10
  5. Step 5: Solve for x
    x = 40,710,493,172.10/226,011.90
  6. Step 6: Final answer
    x = 180,125.44

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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.