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Finding the Fourth Proportional to 304,630.66, 420,436.74 and 189,927.91

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Solution

The fourth proportional to 304,630.66, 420,436.74 and 189,927.91 is: 262,129.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    304,630.66 : 420,436.74 = 189,927.91 : x
  2. Step 2: Convert to fraction form
    304,630.66/420,436.74 = 189,927.91/x
  3. Step 3: Cross multiply
    304,630.66x = 420,436.74 × 189,927.91
  4. Step 4: Simplify right side
    304,630.66x = 79,852,671,315.41
  5. Step 5: Solve for x
    x = 79,852,671,315.41/304,630.66
  6. Step 6: Final answer
    x = 262,129.46

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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.