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Finding the Fourth Proportional to 342,349.47, 472,283.06 and 221,529.80

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Solution

The fourth proportional to 342,349.47, 472,283.06 and 221,529.80 is: 305,608.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,349.47 : 472,283.06 = 221,529.80 : x
  2. Step 2: Convert to fraction form
    342,349.47/472,283.06 = 221,529.80/x
  3. Step 3: Cross multiply
    342,349.47x = 472,283.06 × 221,529.80
  4. Step 4: Simplify right side
    342,349.47x = 104,624,771,825.19
  5. Step 5: Solve for x
    x = 104,624,771,825.19/342,349.47
  6. Step 6: Final answer
    x = 305,608.10

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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.