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Finding the Fourth Proportional to 472,668.40, 652,266.48 and 281,582.80

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Solution

The fourth proportional to 472,668.40, 652,266.48 and 281,582.80 is: 388,574.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,668.40 : 652,266.48 = 281,582.80 : x
  2. Step 2: Convert to fraction form
    472,668.40/652,266.48 = 281,582.80/x
  3. Step 3: Cross multiply
    472,668.40x = 652,266.48 × 281,582.80
  4. Step 4: Simplify right side
    472,668.40x = 183,667,021,784.54
  5. Step 5: Solve for x
    x = 183,667,021,784.54/472,668.40
  6. Step 6: Final answer
    x = 388,574.78

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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.