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Finding the Fourth Proportional to 342,348.53, 472,281.78 and 221,528.86

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Solution

The fourth proportional to 342,348.53, 472,281.78 and 221,528.86 is: 305,606.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,348.53 : 472,281.78 = 221,528.86 : x
  2. Step 2: Convert to fraction form
    342,348.53/472,281.78 = 221,528.86/x
  3. Step 3: Cross multiply
    342,348.53x = 472,281.78 × 221,528.86
  4. Step 4: Simplify right side
    342,348.53x = 104,624,044,322.17
  5. Step 5: Solve for x
    x = 104,624,044,322.17/342,348.53
  6. Step 6: Final answer
    x = 305,606.82

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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.