Home / 281,300,320.40-421,950,480.60-189,467,315.60

Finding the Fourth Proportional to 281,300,320.40, 421,950,480.60 and 189,467,315.60

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Solution

The fourth proportional to 281,300,320.40, 421,950,480.60 and 189,467,315.60 is: 284,200,973.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,300,320.40 : 421,950,480.60 = 189,467,315.60 : x
  2. Step 2: Convert to fraction form
    281,300,320.40/421,950,480.60 = 189,467,315.60/x
  3. Step 3: Cross multiply
    281,300,320.40x = 421,950,480.60 × 189,467,315.60
  4. Step 4: Simplify right side
    281,300,320.40x = 79,945,824,875,411,872
  5. Step 5: Solve for x
    x = 79,945,824,875,411,872/281,300,320.40
  6. Step 6: Final answer
    x = 284,200,973.40

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.