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Finding the Fourth Proportional to 279,459.58, 421,072.30 and 230,633.32

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Solution

The fourth proportional to 279,459.58, 421,072.30 and 230,633.32 is: 347,503.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,459.58 : 421,072.30 = 230,633.32 : x
  2. Step 2: Convert to fraction form
    279,459.58/421,072.30 = 230,633.32/x
  3. Step 3: Cross multiply
    279,459.58x = 421,072.30 × 230,633.32
  4. Step 4: Simplify right side
    279,459.58x = 97,113,302,509.04
  5. Step 5: Solve for x
    x = 97,113,302,509.04/279,459.58
  6. Step 6: Final answer
    x = 347,503.93

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.