Home / 448,638.10-671,376.33-280,237.74

Finding the Fourth Proportional to 448,638.10, 671,376.33 and 280,237.74

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Solution

The fourth proportional to 448,638.10, 671,376.33 and 280,237.74 is: 419,369.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,638.10 : 671,376.33 = 280,237.74 : x
  2. Step 2: Convert to fraction form
    448,638.10/671,376.33 = 280,237.74/x
  3. Step 3: Cross multiply
    448,638.10x = 671,376.33 × 280,237.74
  4. Step 4: Simplify right side
    448,638.10x = 188,144,983,941.92
  5. Step 5: Solve for x
    x = 188,144,983,941.92/448,638.10
  6. Step 6: Final answer
    x = 419,369.16

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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.