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Finding the Fourth Proportional to 342,643.42, 473,061.36 and 220,185.19

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Solution

The fourth proportional to 342,643.42, 473,061.36 and 220,185.19 is: 303,992.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,643.42 : 473,061.36 = 220,185.19 : x
  2. Step 2: Convert to fraction form
    342,643.42/473,061.36 = 220,185.19/x
  3. Step 3: Cross multiply
    342,643.42x = 473,061.36 × 220,185.19
  4. Step 4: Simplify right side
    342,643.42x = 104,161,105,433.26
  5. Step 5: Solve for x
    x = 104,161,105,433.26/342,643.42
  6. Step 6: Final answer
    x = 303,992.72

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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.