Home / 215,811.02-298,007.25-135,376.80

Finding the Fourth Proportional to 215,811.02, 298,007.25 and 135,376.80

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Solution

The fourth proportional to 215,811.02, 298,007.25 and 135,376.80 is: 186,937.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,811.02 : 298,007.25 = 135,376.80 : x
  2. Step 2: Convert to fraction form
    215,811.02/298,007.25 = 135,376.80/x
  3. Step 3: Cross multiply
    215,811.02x = 298,007.25 × 135,376.80
  4. Step 4: Simplify right side
    215,811.02x = 40,343,267,881.80
  5. Step 5: Solve for x
    x = 40,343,267,881.80/215,811.02
  6. Step 6: Final answer
    x = 186,937.95

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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.