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Finding the Fourth Proportional to 416,921.45, 575,549.96 and 279,337.28

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Solution

The fourth proportional to 416,921.45, 575,549.96 and 279,337.28 is: 385,618.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    416,921.45 : 575,549.96 = 279,337.28 : x
  2. Step 2: Convert to fraction form
    416,921.45/575,549.96 = 279,337.28/x
  3. Step 3: Cross multiply
    416,921.45x = 575,549.96 × 279,337.28
  4. Step 4: Simplify right side
    416,921.45x = 160,772,556,056.07
  5. Step 5: Solve for x
    x = 160,772,556,056.07/416,921.45
  6. Step 6: Final answer
    x = 385,618.34

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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.