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Finding the Fourth Proportional to 355,293.65, 490,333.18 and 202,338.31

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Solution

The fourth proportional to 355,293.65, 490,333.18 and 202,338.31 is: 279,242.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,293.65 : 490,333.18 = 202,338.31 : x
  2. Step 2: Convert to fraction form
    355,293.65/490,333.18 = 202,338.31/x
  3. Step 3: Cross multiply
    355,293.65x = 490,333.18 × 202,338.31
  4. Step 4: Simplify right side
    355,293.65x = 99,213,184,526.46
  5. Step 5: Solve for x
    x = 99,213,184,526.46/355,293.65
  6. Step 6: Final answer
    x = 279,242.78

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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.