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Finding the Fourth Proportional to 245,087.10, 367,630.65 and 87,320.70

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Solution

The fourth proportional to 245,087.10, 367,630.65 and 87,320.70 is: 130,981.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,087.10 : 367,630.65 = 87,320.70 : x
  2. Step 2: Convert to fraction form
    245,087.10/367,630.65 = 87,320.70/x
  3. Step 3: Cross multiply
    245,087.10x = 367,630.65 × 87,320.70
  4. Step 4: Simplify right side
    245,087.10x = 32,101,765,699.46
  5. Step 5: Solve for x
    x = 32,101,765,699.46/245,087.10
  6. Step 6: Final answer
    x = 130,981.05

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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.