Home / 405,315.53-559,325.70-221,545.89

Finding the Fourth Proportional to 405,315.53, 559,325.70 and 221,545.89

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Solution

The fourth proportional to 405,315.53, 559,325.70 and 221,545.89 is: 305,728.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,315.53 : 559,325.70 = 221,545.89 : x
  2. Step 2: Convert to fraction form
    405,315.53/559,325.70 = 221,545.89/x
  3. Step 3: Cross multiply
    405,315.53x = 559,325.70 × 221,545.89
  4. Step 4: Simplify right side
    405,315.53x = 123,916,310,006.37
  5. Step 5: Solve for x
    x = 123,916,310,006.37/405,315.53
  6. Step 6: Final answer
    x = 305,728.01

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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.