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Finding the Fourth Proportional to 305,349.61, 421,384.81 and 167,527.64

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Solution

The fourth proportional to 305,349.61, 421,384.81 and 167,527.64 is: 231,189.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,349.61 : 421,384.81 = 167,527.64 : x
  2. Step 2: Convert to fraction form
    305,349.61/421,384.81 = 167,527.64/x
  3. Step 3: Cross multiply
    305,349.61x = 421,384.81 × 167,527.64
  4. Step 4: Simplify right side
    305,349.61x = 70,593,602,751.15
  5. Step 5: Solve for x
    x = 70,593,602,751.15/305,349.61
  6. Step 6: Final answer
    x = 231,189.43

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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.