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Finding the Fourth Proportional to 357,416.22, 493,323.63 and 221,368.62

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Solution

The fourth proportional to 357,416.22, 493,323.63 and 221,368.62 is: 305,543.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    357,416.22 : 493,323.63 = 221,368.62 : x
  2. Step 2: Convert to fraction form
    357,416.22/493,323.63 = 221,368.62/x
  3. Step 3: Cross multiply
    357,416.22x = 493,323.63 × 221,368.62
  4. Step 4: Simplify right side
    357,416.22x = 109,206,371,186.49
  5. Step 5: Solve for x
    x = 109,206,371,186.49/357,416.22
  6. Step 6: Final answer
    x = 305,543.97

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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.