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Finding the Fourth Proportional to 355,785.89, 490,692.23 and 253,778.74

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Solution

The fourth proportional to 355,785.89, 490,692.23 and 253,778.74 is: 350,006.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,785.89 : 490,692.23 = 253,778.74 : x
  2. Step 2: Convert to fraction form
    355,785.89/490,692.23 = 253,778.74/x
  3. Step 3: Cross multiply
    355,785.89x = 490,692.23 × 253,778.74
  4. Step 4: Simplify right side
    355,785.89x = 124,527,254,313.24
  5. Step 5: Solve for x
    x = 124,527,254,313.24/355,785.89
  6. Step 6: Final answer
    x = 350,006.17

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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.