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Finding the Fourth Proportional to 445,801.60, 668,702.40 and 256,844.80

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Solution

The fourth proportional to 445,801.60, 668,702.40 and 256,844.80 is: 385,267.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,801.60 : 668,702.40 = 256,844.80 : x
  2. Step 2: Convert to fraction form
    445,801.60/668,702.40 = 256,844.80/x
  3. Step 3: Cross multiply
    445,801.60x = 668,702.40 × 256,844.80
  4. Step 4: Simplify right side
    445,801.60x = 171,752,734,187.52
  5. Step 5: Solve for x
    x = 171,752,734,187.52/445,801.60
  6. Step 6: Final answer
    x = 385,267.20

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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.