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Finding the Fourth Proportional to 357,563.80, 493,281.66 and 221,561.56

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Solution

The fourth proportional to 357,563.80, 493,281.66 and 221,561.56 is: 305,658.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    357,563.80 : 493,281.66 = 221,561.56 : x
  2. Step 2: Convert to fraction form
    357,563.80/493,281.66 = 221,561.56/x
  3. Step 3: Cross multiply
    357,563.80x = 493,281.66 × 221,561.56
  4. Step 4: Simplify right side
    357,563.80x = 109,292,254,108.99
  5. Step 5: Solve for x
    x = 109,292,254,108.99/357,563.80
  6. Step 6: Final answer
    x = 305,658.05

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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.