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Finding the Fourth Proportional to 376,643.51, 519,883.23 and 223,706.60

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Solution

The fourth proportional to 376,643.51, 519,883.23 and 223,706.60 is: 308,783.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    376,643.51 : 519,883.23 = 223,706.60 : x
  2. Step 2: Convert to fraction form
    376,643.51/519,883.23 = 223,706.60/x
  3. Step 3: Cross multiply
    376,643.51x = 519,883.23 × 223,706.60
  4. Step 4: Simplify right side
    376,643.51x = 116,301,309,780.32
  5. Step 5: Solve for x
    x = 116,301,309,780.32/376,643.51
  6. Step 6: Final answer
    x = 308,783.52

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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.