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Finding the Fourth Proportional to 345,518.84, 518,319.79 and 326,623.16

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Solution

The fourth proportional to 345,518.84, 518,319.79 and 326,623.16 is: 489,974.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,518.84 : 518,319.79 = 326,623.16 : x
  2. Step 2: Convert to fraction form
    345,518.84/518,319.79 = 326,623.16/x
  3. Step 3: Cross multiply
    345,518.84x = 518,319.79 × 326,623.16
  4. Step 4: Simplify right side
    345,518.84x = 169,295,248,179.58
  5. Step 5: Solve for x
    x = 169,295,248,179.58/345,518.84
  6. Step 6: Final answer
    x = 489,974.00

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1.5x scale

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.