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Finding the Fourth Proportional to 354,767.84, 489,986.88 and 258,401.02

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Solution

The fourth proportional to 354,767.84, 489,986.88 and 258,401.02 is: 356,890.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,767.84 : 489,986.88 = 258,401.02 : x
  2. Step 2: Convert to fraction form
    354,767.84/489,986.88 = 258,401.02/x
  3. Step 3: Cross multiply
    354,767.84x = 489,986.88 × 258,401.02
  4. Step 4: Simplify right side
    354,767.84x = 126,613,109,578.62
  5. Step 5: Solve for x
    x = 126,613,109,578.62/354,767.84
  6. Step 6: Final answer
    x = 356,890.04

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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.