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Finding the Fourth Proportional to 342,955.61, 473,176.23 and 221,905.16

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Solution

The fourth proportional to 342,955.61, 473,176.23 and 221,905.16 is: 306,162.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,955.61 : 473,176.23 = 221,905.16 : x
  2. Step 2: Convert to fraction form
    342,955.61/473,176.23 = 221,905.16/x
  3. Step 3: Cross multiply
    342,955.61x = 473,176.23 × 221,905.16
  4. Step 4: Simplify right side
    342,955.61x = 105,000,244,660.47
  5. Step 5: Solve for x
    x = 105,000,244,660.47/342,955.61
  6. Step 6: Final answer
    x = 306,162.79

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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.