Home / 420,768,005.80-631,152,008.70-237,101,996.20

Finding the Fourth Proportional to 420,768,005.80, 631,152,008.70 and 237,101,996.20

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Solution

The fourth proportional to 420,768,005.80, 631,152,008.70 and 237,101,996.20 is: 355,652,994.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,768,005.80 : 631,152,008.70 = 237,101,996.20 : x
  2. Step 2: Convert to fraction form
    420,768,005.80/631,152,008.70 = 237,101,996.20/x
  3. Step 3: Cross multiply
    420,768,005.80x = 631,152,008.70 × 237,101,996.20
  4. Step 4: Simplify right side
    420,768,005.80x = 149,647,401,168,409,760
  5. Step 5: Solve for x
    x = 149,647,401,168,409,760/420,768,005.80
  6. Step 6: Final answer
    x = 355,652,994.30

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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.