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Finding the Fourth Proportional to 328,558.77, 492,842.07 and 128,973.15

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Solution

The fourth proportional to 328,558.77, 492,842.07 and 128,973.15 is: 193,461.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,558.77 : 492,842.07 = 128,973.15 : x
  2. Step 2: Convert to fraction form
    328,558.77/492,842.07 = 128,973.15/x
  3. Step 3: Cross multiply
    328,558.77x = 492,842.07 × 128,973.15
  4. Step 4: Simplify right side
    328,558.77x = 63,563,394,220.42
  5. Step 5: Solve for x
    x = 63,563,394,220.42/328,558.77
  6. Step 6: Final answer
    x = 193,461.26

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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.