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Finding the Fourth Proportional to 468,145.20, 646,040.40 and 253,285.20

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Solution

The fourth proportional to 468,145.20, 646,040.40 and 253,285.20 is: 349,533.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    468,145.20 : 646,040.40 = 253,285.20 : x
  2. Step 2: Convert to fraction form
    468,145.20/646,040.40 = 253,285.20/x
  3. Step 3: Cross multiply
    468,145.20x = 646,040.40 × 253,285.20
  4. Step 4: Simplify right side
    468,145.20x = 163,632,471,922.08
  5. Step 5: Solve for x
    x = 163,632,471,922.08/468,145.20
  6. Step 6: Final answer
    x = 349,533.59

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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.