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Finding the Fourth Proportional to 216,271.64, 298,289.00 and 130,140.83

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Solution

The fourth proportional to 216,271.64, 298,289.00 and 130,140.83 is: 179,494.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,271.64 : 298,289.00 = 130,140.83 : x
  2. Step 2: Convert to fraction form
    216,271.64/298,289.00 = 130,140.83/x
  3. Step 3: Cross multiply
    216,271.64x = 298,289.00 × 130,140.83
  4. Step 4: Simplify right side
    216,271.64x = 38,819,579,110.94
  5. Step 5: Solve for x
    x = 38,819,579,110.94/216,271.64
  6. Step 6: Final answer
    x = 179,494.54

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1.5x scale

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.