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Finding the Fourth Proportional to 216,853.74, 299,270.70 and 121,359.60

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Solution

The fourth proportional to 216,853.74, 299,270.70 and 121,359.60 is: 167,483.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,853.74 : 299,270.70 = 121,359.60 : x
  2. Step 2: Convert to fraction form
    216,853.74/299,270.70 = 121,359.60/x
  3. Step 3: Cross multiply
    216,853.74x = 299,270.70 × 121,359.60
  4. Step 4: Simplify right side
    216,853.74x = 36,319,372,443.72
  5. Step 5: Solve for x
    x = 36,319,372,443.72/216,853.74
  6. Step 6: Final answer
    x = 167,483.27

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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.