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Finding the Fourth Proportional to 245,867.70, 368,801.55 and 216,999.30

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Solution

The fourth proportional to 245,867.70, 368,801.55 and 216,999.30 is: 325,498.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,867.70 : 368,801.55 = 216,999.30 : x
  2. Step 2: Convert to fraction form
    245,867.70/368,801.55 = 216,999.30/x
  3. Step 3: Cross multiply
    245,867.70x = 368,801.55 × 216,999.30
  4. Step 4: Simplify right side
    245,867.70x = 80,029,678,188.92
  5. Step 5: Solve for x
    x = 80,029,678,188.92/245,867.70
  6. Step 6: Final answer
    x = 325,498.95

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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.