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Finding the Fourth Proportional to 216,124.61, 298,216.28 and 120,631.28

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Solution

The fourth proportional to 216,124.61, 298,216.28 and 120,631.28 is: 166,451.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,124.61 : 298,216.28 = 120,631.28 : x
  2. Step 2: Convert to fraction form
    216,124.61/298,216.28 = 120,631.28/x
  3. Step 3: Cross multiply
    216,124.61x = 298,216.28 × 120,631.28
  4. Step 4: Simplify right side
    216,124.61x = 35,974,210,383.74
  5. Step 5: Solve for x
    x = 35,974,210,383.74/216,124.61
  6. Step 6: Final answer
    x = 166,451.25

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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.