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Finding the Fourth Proportional to 468,012.78, 645,858.09 and 253,152.18

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Solution

The fourth proportional to 468,012.78, 645,858.09 and 253,152.18 is: 349,350.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    468,012.78 : 645,858.09 = 253,152.18 : x
  2. Step 2: Convert to fraction form
    468,012.78/645,858.09 = 253,152.18/x
  3. Step 3: Cross multiply
    468,012.78x = 645,858.09 × 253,152.18
  4. Step 4: Simplify right side
    468,012.78x = 163,500,383,454.14
  5. Step 5: Solve for x
    x = 163,500,383,454.14/468,012.78
  6. Step 6: Final answer
    x = 349,350.25

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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.