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Finding the Fourth Proportional to 243,391.50, 365,121.86 and 74,925.88

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Solution

The fourth proportional to 243,391.50, 365,121.86 and 74,925.88 is: 112,399.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,391.50 : 365,121.86 = 74,925.88 : x
  2. Step 2: Convert to fraction form
    243,391.50/365,121.86 = 74,925.88/x
  3. Step 3: Cross multiply
    243,391.50x = 365,121.86 × 74,925.88
  4. Step 4: Simplify right side
    243,391.50x = 27,357,076,667.74
  5. Step 5: Solve for x
    x = 27,357,076,667.74/243,391.50
  6. Step 6: Final answer
    x = 112,399.47

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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.