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Finding the Fourth Proportional to 304,818.54, 420,854.98 and 190,271.58

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Solution

The fourth proportional to 304,818.54, 420,854.98 and 190,271.58 is: 262,702.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    304,818.54 : 420,854.98 = 190,271.58 : x
  2. Step 2: Convert to fraction form
    304,818.54/420,854.98 = 190,271.58/x
  3. Step 3: Cross multiply
    304,818.54x = 420,854.98 × 190,271.58
  4. Step 4: Simplify right side
    304,818.54x = 80,076,741,995.47
  5. Step 5: Solve for x
    x = 80,076,741,995.47/304,818.54
  6. Step 6: Final answer
    x = 262,702.99

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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.