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Finding the Fourth Proportional to 210,848.60, 316,345.80 and 203,558.60

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Solution

The fourth proportional to 210,848.60, 316,345.80 and 203,558.60 is: 305,408.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,848.60 : 316,345.80 = 203,558.60 : x
  2. Step 2: Convert to fraction form
    210,848.60/316,345.80 = 203,558.60/x
  3. Step 3: Cross multiply
    210,848.60x = 316,345.80 × 203,558.60
  4. Step 4: Simplify right side
    210,848.60x = 64,394,908,163.88
  5. Step 5: Solve for x
    x = 64,394,908,163.88/210,848.60
  6. Step 6: Final answer
    x = 305,408.28

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.