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Finding the Fourth Proportional to 326,291.60, 489,048.60 and 136,751.60

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Solution

The fourth proportional to 326,291.60, 489,048.60 and 136,751.60 is: 204,964.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,291.60 : 489,048.60 = 136,751.60 : x
  2. Step 2: Convert to fraction form
    326,291.60/489,048.60 = 136,751.60/x
  3. Step 3: Cross multiply
    326,291.60x = 489,048.60 × 136,751.60
  4. Step 4: Simplify right side
    326,291.60x = 66,878,178,527.76
  5. Step 5: Solve for x
    x = 66,878,178,527.76/326,291.60
  6. Step 6: Final answer
    x = 204,964.45

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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.