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Finding the Fourth Proportional to 405,418.80, 559,479.24 and 224,140.80

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Solution

The fourth proportional to 405,418.80, 559,479.24 and 224,140.80 is: 309,315.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,418.80 : 559,479.24 = 224,140.80 : x
  2. Step 2: Convert to fraction form
    405,418.80/559,479.24 = 224,140.80/x
  3. Step 3: Cross multiply
    405,418.80x = 559,479.24 × 224,140.80
  4. Step 4: Simplify right side
    405,418.80x = 125,402,124,436.99
  5. Step 5: Solve for x
    x = 125,402,124,436.99/405,418.80
  6. Step 6: Final answer
    x = 309,315.02

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1.5x scale

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.