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Finding the Fourth Proportional to 357,354.36, 493,379.80 and 221,533.46

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Solution

The fourth proportional to 357,354.36, 493,379.80 and 221,533.46 is: 305,859.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    357,354.36 : 493,379.80 = 221,533.46 : x
  2. Step 2: Convert to fraction form
    357,354.36/493,379.80 = 221,533.46/x
  3. Step 3: Cross multiply
    357,354.36x = 493,379.80 × 221,533.46
  4. Step 4: Simplify right side
    357,354.36x = 109,300,134,188.11
  5. Step 5: Solve for x
    x = 109,300,134,188.11/357,354.36
  6. Step 6: Final answer
    x = 305,859.24

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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.