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Finding the Fourth Proportional to 279,483.77, 385,562.99 and 188,810.57

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Solution

The fourth proportional to 279,483.77, 385,562.99 and 188,810.57 is: 260,474.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,483.77 : 385,562.99 = 188,810.57 : x
  2. Step 2: Convert to fraction form
    279,483.77/385,562.99 = 188,810.57/x
  3. Step 3: Cross multiply
    279,483.77x = 385,562.99 × 188,810.57
  4. Step 4: Simplify right side
    279,483.77x = 72,798,365,040.94
  5. Step 5: Solve for x
    x = 72,798,365,040.94/279,483.77
  6. Step 6: Final answer
    x = 260,474.40

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1.5x scale

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.