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Finding the Fourth Proportional to 305,690.69, 458,608.07 and 300,607.28

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Solution

The fourth proportional to 305,690.69, 458,608.07 and 300,607.28 is: 450,981.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,690.69 : 458,608.07 = 300,607.28 : x
  2. Step 2: Convert to fraction form
    305,690.69/458,608.07 = 300,607.28/x
  3. Step 3: Cross multiply
    305,690.69x = 458,608.07 × 300,607.28
  4. Step 4: Simplify right side
    305,690.69x = 137,860,920,712.67
  5. Step 5: Solve for x
    x = 137,860,920,712.67/305,690.69
  6. Step 6: Final answer
    x = 450,981.75

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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.