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Finding the Fourth Proportional to 361,890.61, 499,357.32 and 216,661.59

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Solution

The fourth proportional to 361,890.61, 499,357.32 and 216,661.59 is: 298,962.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    361,890.61 : 499,357.32 = 216,661.59 : x
  2. Step 2: Convert to fraction form
    361,890.61/499,357.32 = 216,661.59/x
  3. Step 3: Cross multiply
    361,890.61x = 499,357.32 × 216,661.59
  4. Step 4: Simplify right side
    361,890.61x = 108,191,549,846.03
  5. Step 5: Solve for x
    x = 108,191,549,846.03/361,890.61
  6. Step 6: Final answer
    x = 298,962.03

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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.