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Finding the Fourth Proportional to 245,078.84, 367,417.38 and 87,217.40

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Solution

The fourth proportional to 245,078.84, 367,417.38 and 87,217.40 is: 130,754.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,078.84 : 367,417.38 = 87,217.40 : x
  2. Step 2: Convert to fraction form
    245,078.84/367,417.38 = 87,217.40/x
  3. Step 3: Cross multiply
    245,078.84x = 367,417.38 × 87,217.40
  4. Step 4: Simplify right side
    245,078.84x = 32,045,188,598.41
  5. Step 5: Solve for x
    x = 32,045,188,598.41/245,078.84
  6. Step 6: Final answer
    x = 130,754.61

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1.5x scale

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.