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Finding the Fourth Proportional to 405,374.96, 559,468.74 and 235,576.28

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Solution

The fourth proportional to 405,374.96, 559,468.74 and 235,576.28 is: 325,125.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,374.96 : 559,468.74 = 235,576.28 : x
  2. Step 2: Convert to fraction form
    405,374.96/559,468.74 = 235,576.28/x
  3. Step 3: Cross multiply
    405,374.96x = 559,468.74 × 235,576.28
  4. Step 4: Simplify right side
    405,374.96x = 131,797,564,545.49
  5. Step 5: Solve for x
    x = 131,797,564,545.49/405,374.96
  6. Step 6: Final answer
    x = 325,125.08

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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.