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Finding the Fourth Proportional to 287,662.98, 431,494.46 and 100,630.74

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Solution

The fourth proportional to 287,662.98, 431,494.46 and 100,630.74 is: 150,946.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,662.98 : 431,494.46 = 100,630.74 : x
  2. Step 2: Convert to fraction form
    287,662.98/431,494.46 = 100,630.74/x
  3. Step 3: Cross multiply
    287,662.98x = 431,494.46 × 100,630.74
  4. Step 4: Simplify right side
    287,662.98x = 43,421,606,815.70
  5. Step 5: Solve for x
    x = 43,421,606,815.70/287,662.98
  6. Step 6: Final answer
    x = 150,946.11

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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.