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Finding the Fourth Proportional to 617,311.26, 926,133.28 and 257,362.47

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Solution

The fourth proportional to 617,311.26, 926,133.28 and 257,362.47 is: 386,113.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,311.26 : 926,133.28 = 257,362.47 : x
  2. Step 2: Convert to fraction form
    617,311.26/926,133.28 = 257,362.47/x
  3. Step 3: Cross multiply
    617,311.26x = 926,133.28 × 257,362.47
  4. Step 4: Simplify right side
    617,311.26x = 238,351,947,846.60
  5. Step 5: Solve for x
    x = 238,351,947,846.60/617,311.26
  6. Step 6: Final answer
    x = 386,113.07

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.