Home / 405,244.39-559,250.12-221,478.93

Finding the Fourth Proportional to 405,244.39, 559,250.12 and 221,478.93

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Solution

The fourth proportional to 405,244.39, 559,250.12 and 221,478.93 is: 305,647.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,244.39 : 559,250.12 = 221,478.93 : x
  2. Step 2: Convert to fraction form
    405,244.39/559,250.12 = 221,478.93/x
  3. Step 3: Cross multiply
    405,244.39x = 559,250.12 × 221,478.93
  4. Step 4: Simplify right side
    405,244.39x = 123,862,114,830.02
  5. Step 5: Solve for x
    x = 123,862,114,830.02/405,244.39
  6. Step 6: Final answer
    x = 305,647.95

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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.