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Finding the Fourth Proportional to 342,349.22, 472,282.71 and 221,529.56

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Solution

The fourth proportional to 342,349.22, 472,282.71 and 221,529.56 is: 305,607.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,349.22 : 472,282.71 = 221,529.56 : x
  2. Step 2: Convert to fraction form
    342,349.22/472,282.71 = 221,529.56/x
  3. Step 3: Cross multiply
    342,349.22x = 472,282.71 × 221,529.56
  4. Step 4: Simplify right side
    342,349.22x = 104,624,578,580.49
  5. Step 5: Solve for x
    x = 104,624,578,580.49/342,349.22
  6. Step 6: Final answer
    x = 305,607.77

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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.