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Finding the Fourth Proportional to 342,521.96, 472,522.59 and 221,702.06

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Solution

The fourth proportional to 342,521.96, 472,522.59 and 221,702.06 is: 305,846.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,521.96 : 472,522.59 = 221,702.06 : x
  2. Step 2: Convert to fraction form
    342,521.96/472,522.59 = 221,702.06/x
  3. Step 3: Cross multiply
    342,521.96x = 472,522.59 × 221,702.06
  4. Step 4: Simplify right side
    342,521.96x = 104,759,232,780.84
  5. Step 5: Solve for x
    x = 104,759,232,780.84/342,521.96
  6. Step 6: Final answer
    x = 305,846.77

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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.