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Finding the Fourth Proportional to 336,756.80, 505,718.40 and 326,259.20

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Solution

The fourth proportional to 336,756.80, 505,718.40 and 326,259.20 is: 489,953.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    336,756.80 : 505,718.40 = 326,259.20 : x
  2. Step 2: Convert to fraction form
    336,756.80/505,718.40 = 326,259.20/x
  3. Step 3: Cross multiply
    336,756.80x = 505,718.40 × 326,259.20
  4. Step 4: Simplify right side
    336,756.80x = 164,995,280,609.28
  5. Step 5: Solve for x
    x = 164,995,280,609.28/336,756.80
  6. Step 6: Final answer
    x = 489,953.82

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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.