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Finding the Fourth Proportional to 355,528.75, 490,509.48 and 202,458.42

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Solution

The fourth proportional to 355,528.75, 490,509.48 and 202,458.42 is: 279,324.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,528.75 : 490,509.48 = 202,458.42 : x
  2. Step 2: Convert to fraction form
    355,528.75/490,509.48 = 202,458.42/x
  3. Step 3: Cross multiply
    355,528.75x = 490,509.48 × 202,458.42
  4. Step 4: Simplify right side
    355,528.75x = 99,307,774,315.82
  5. Step 5: Solve for x
    x = 99,307,774,315.82/355,528.75
  6. Step 6: Final answer
    x = 279,324.17

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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.