Home / 280,411,119.48-420,240,696.12-218,237,504.79

Finding the Fourth Proportional to 280,411,119.48, 420,240,696.12 and 218,237,504.79

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Solution

The fourth proportional to 280,411,119.48, 420,240,696.12 and 218,237,504.79 is: 327,063,638.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,411,119.48 : 420,240,696.12 = 218,237,504.79 : x
  2. Step 2: Convert to fraction form
    280,411,119.48/420,240,696.12 = 218,237,504.79/x
  3. Step 3: Cross multiply
    280,411,119.48x = 420,240,696.12 × 218,237,504.79
  4. Step 4: Simplify right side
    280,411,119.48x = 91,712,280,932,441,424
  5. Step 5: Solve for x
    x = 91,712,280,932,441,424/280,411,119.48
  6. Step 6: Final answer
    x = 327,063,638.21

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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.