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Finding the Fourth Proportional to 416,859.80, 575,464.90 and 279,275.64

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Solution

The fourth proportional to 416,859.80, 575,464.90 and 279,275.64 is: 385,533.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    416,859.80 : 575,464.90 = 279,275.64 : x
  2. Step 2: Convert to fraction form
    416,859.80/575,464.90 = 279,275.64/x
  3. Step 3: Cross multiply
    416,859.80x = 575,464.90 × 279,275.64
  4. Step 4: Simplify right side
    416,859.80x = 160,713,328,245.04
  5. Step 5: Solve for x
    x = 160,713,328,245.04/416,859.80
  6. Step 6: Final answer
    x = 385,533.29

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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.