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Finding the Fourth Proportional to 357,562.80, 493,280.28 and 221,560.56

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Solution

The fourth proportional to 357,562.80, 493,280.28 and 221,560.56 is: 305,656.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    357,562.80 : 493,280.28 = 221,560.56 : x
  2. Step 2: Convert to fraction form
    357,562.80/493,280.28 = 221,560.56/x
  3. Step 3: Cross multiply
    357,562.80x = 493,280.28 × 221,560.56
  4. Step 4: Simplify right side
    357,562.80x = 109,291,455,073.76
  5. Step 5: Solve for x
    x = 109,291,455,073.76/357,562.80
  6. Step 6: Final answer
    x = 305,656.67

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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.