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Finding the Fourth Proportional to 347,594, 479,679.72 and 188,618

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Solution

The fourth proportional to 347,594, 479,679.72 and 188,618 is: 260,292.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,594 : 479,679.72 = 188,618 : x
  2. Step 2: Convert to fraction form
    347,594/479,679.72 = 188,618/x
  3. Step 3: Cross multiply
    347,594x = 479,679.72 × 188,618
  4. Step 4: Simplify right side
    347,594x = 90,476,229,426.96
  5. Step 5: Solve for x
    x = 90,476,229,426.96/347,594
  6. Step 6: Final answer
    x = 260,292.84

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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.