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Finding the Fourth Proportional to 357,358.36, 493,385.32 and 221,537.46

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Solution

The fourth proportional to 357,358.36, 493,385.32 and 221,537.46 is: 305,864.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    357,358.36 : 493,385.32 = 221,537.46 : x
  2. Step 2: Convert to fraction form
    357,358.36/493,385.32 = 221,537.46/x
  3. Step 3: Cross multiply
    357,358.36x = 493,385.32 × 221,537.46
  4. Step 4: Simplify right side
    357,358.36x = 109,303,330,594.09
  5. Step 5: Solve for x
    x = 109,303,330,594.09/357,358.36
  6. Step 6: Final answer
    x = 305,864.76

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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.