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Finding the Fourth Proportional to 355,529.75, 490,510.86 and 202,459.42

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Solution

The fourth proportional to 355,529.75, 490,510.86 and 202,459.42 is: 279,325.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,529.75 : 490,510.86 = 202,459.42 : x
  2. Step 2: Convert to fraction form
    355,529.75/490,510.86 = 202,459.42/x
  3. Step 3: Cross multiply
    355,529.75x = 490,510.86 × 202,459.42
  4. Step 4: Simplify right side
    355,529.75x = 99,308,544,219.30
  5. Step 5: Solve for x
    x = 99,308,544,219.30/355,529.75
  6. Step 6: Final answer
    x = 279,325.55

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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.