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Finding the Fourth Proportional to 300,063.78, 450,317.19 and 142,292.76

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Solution

The fourth proportional to 300,063.78, 450,317.19 and 142,292.76 is: 213,544.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,063.78 : 450,317.19 = 142,292.76 : x
  2. Step 2: Convert to fraction form
    300,063.78/450,317.19 = 142,292.76/x
  3. Step 3: Cross multiply
    300,063.78x = 450,317.19 × 142,292.76
  4. Step 4: Simplify right side
    300,063.78x = 64,076,875,840.54
  5. Step 5: Solve for x
    x = 64,076,875,840.54/300,063.78
  6. Step 6: Final answer
    x = 213,544.19

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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.