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Finding the Fourth Proportional to 354,492.95, 489,608.34 and 258,127.65

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Solution

The fourth proportional to 354,492.95, 489,608.34 and 258,127.65 is: 356,513.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,492.95 : 489,608.34 = 258,127.65 : x
  2. Step 2: Convert to fraction form
    354,492.95/489,608.34 = 258,127.65/x
  3. Step 3: Cross multiply
    354,492.95x = 489,608.34 × 258,127.65
  4. Step 4: Simplify right side
    354,492.95x = 126,381,450,224.60
  5. Step 5: Solve for x
    x = 126,381,450,224.60/354,492.95
  6. Step 6: Final answer
    x = 356,513.30

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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.