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Finding the Fourth Proportional to 301,230.36, 451,848.78 and 90,870.12

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Solution

The fourth proportional to 301,230.36, 451,848.78 and 90,870.12 is: 136,306.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    301,230.36 : 451,848.78 = 90,870.12 : x
  2. Step 2: Convert to fraction form
    301,230.36/451,848.78 = 90,870.12/x
  3. Step 3: Cross multiply
    301,230.36x = 451,848.78 × 90,870.12
  4. Step 4: Simplify right side
    301,230.36x = 41,059,552,860.45
  5. Step 5: Solve for x
    x = 41,059,552,860.45/301,230.36
  6. Step 6: Final answer
    x = 136,306.16

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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.