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Finding the Fourth Proportional to 416,862.93, 575,469.21 and 279,278.76

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Solution

The fourth proportional to 416,862.93, 575,469.21 and 279,278.76 is: 385,537.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    416,862.93 : 575,469.21 = 279,278.76 : x
  2. Step 2: Convert to fraction form
    416,862.93/575,469.21 = 279,278.76/x
  3. Step 3: Cross multiply
    416,862.93x = 575,469.21 × 279,278.76
  4. Step 4: Simplify right side
    416,862.93x = 160,716,327,386.98
  5. Step 5: Solve for x
    x = 160,716,327,386.98/416,862.93
  6. Step 6: Final answer
    x = 385,537.59

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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.