Home / 405,386.71-559,440.47-235,620.83

Finding the Fourth Proportional to 405,386.71, 559,440.47 and 235,620.83

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Solution

The fourth proportional to 405,386.71, 559,440.47 and 235,620.83 is: 325,160.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,386.71 : 559,440.47 = 235,620.83 : x
  2. Step 2: Convert to fraction form
    405,386.71/559,440.47 = 235,620.83/x
  3. Step 3: Cross multiply
    405,386.71x = 559,440.47 × 235,620.83
  4. Step 4: Simplify right side
    405,386.71x = 131,815,829,864.64
  5. Step 5: Solve for x
    x = 131,815,829,864.64/405,386.71
  6. Step 6: Final answer
    x = 325,160.71

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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.