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Finding the Fourth Proportional to 203,235.40, 304,853.10 and 76,875.40

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Solution

The fourth proportional to 203,235.40, 304,853.10 and 76,875.40 is: 115,313.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,235.40 : 304,853.10 = 76,875.40 : x
  2. Step 2: Convert to fraction form
    203,235.40/304,853.10 = 76,875.40/x
  3. Step 3: Cross multiply
    203,235.40x = 304,853.10 × 76,875.40
  4. Step 4: Simplify right side
    203,235.40x = 23,435,704,003.74
  5. Step 5: Solve for x
    x = 23,435,704,003.74/203,235.40
  6. Step 6: Final answer
    x = 115,313.10

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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.