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Finding the Fourth Proportional to 354,686.72, 489,479.48 and 193,550.60

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Solution

The fourth proportional to 354,686.72, 489,479.48 and 193,550.60 is: 267,106.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,686.72 : 489,479.48 = 193,550.60 : x
  2. Step 2: Convert to fraction form
    354,686.72/489,479.48 = 193,550.60/x
  3. Step 3: Cross multiply
    354,686.72x = 489,479.48 × 193,550.60
  4. Step 4: Simplify right side
    354,686.72x = 94,739,047,041.69
  5. Step 5: Solve for x
    x = 94,739,047,041.69/354,686.72
  6. Step 6: Final answer
    x = 267,106.27

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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.