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Finding the Fourth Proportional to 245,079.84, 367,418.88 and 87,218.40

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Solution

The fourth proportional to 245,079.84, 367,418.88 and 87,218.40 is: 130,756.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,079.84 : 367,418.88 = 87,218.40 : x
  2. Step 2: Convert to fraction form
    245,079.84/367,418.88 = 87,218.40/x
  3. Step 3: Cross multiply
    245,079.84x = 367,418.88 × 87,218.40
  4. Step 4: Simplify right side
    245,079.84x = 32,045,686,843.39
  5. Step 5: Solve for x
    x = 32,045,686,843.39/245,079.84
  6. Step 6: Final answer
    x = 130,756.11

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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.