Home / 405,118.61-559,069.55-223,834.71

Finding the Fourth Proportional to 405,118.61, 559,069.55 and 223,834.71

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Solution

The fourth proportional to 405,118.61, 559,069.55 and 223,834.71 is: 308,895.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,118.61 : 559,069.55 = 223,834.71 : x
  2. Step 2: Convert to fraction form
    405,118.61/559,069.55 = 223,834.71/x
  3. Step 3: Cross multiply
    405,118.61x = 559,069.55 × 223,834.71
  4. Step 4: Simplify right side
    405,118.61x = 125,139,169,474.91
  5. Step 5: Solve for x
    x = 125,139,169,474.91/405,118.61
  6. Step 6: Final answer
    x = 308,895.14

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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.