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Finding the Fourth Proportional to 216,616.33, 298,944.32 and 121,123.00

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Solution

The fourth proportional to 216,616.33, 298,944.32 and 121,123.00 is: 167,157.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,616.33 : 298,944.32 = 121,123.00 : x
  2. Step 2: Convert to fraction form
    216,616.33/298,944.32 = 121,123.00/x
  3. Step 3: Cross multiply
    216,616.33x = 298,944.32 × 121,123.00
  4. Step 4: Simplify right side
    216,616.33x = 36,209,031,639.18
  5. Step 5: Solve for x
    x = 36,209,031,639.18/216,616.33
  6. Step 6: Final answer
    x = 167,157.45

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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.