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Finding the Fourth Proportional to 372,376.80, 513,871.68 and 202,611.36

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Solution

The fourth proportional to 372,376.80, 513,871.68 and 202,611.36 is: 279,599.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,376.80 : 513,871.68 = 202,611.36 : x
  2. Step 2: Convert to fraction form
    372,376.80/513,871.68 = 202,611.36/x
  3. Step 3: Cross multiply
    372,376.80x = 513,871.68 × 202,611.36
  4. Step 4: Simplify right side
    372,376.80x = 104,116,239,950.29
  5. Step 5: Solve for x
    x = 104,116,239,950.29/372,376.80
  6. Step 6: Final answer
    x = 279,599.16

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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.