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Finding the Fourth Proportional to 279,208.57, 385,307.53 and 151,883.86

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Solution

The fourth proportional to 279,208.57, 385,307.53 and 151,883.86 is: 209,599.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,208.57 : 385,307.53 = 151,883.86 : x
  2. Step 2: Convert to fraction form
    279,208.57/385,307.53 = 151,883.86/x
  3. Step 3: Cross multiply
    279,208.57x = 385,307.53 × 151,883.86
  4. Step 4: Simplify right side
    279,208.57x = 58,521,994,943.47
  5. Step 5: Solve for x
    x = 58,521,994,943.47/279,208.57
  6. Step 6: Final answer
    x = 209,599.57

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.