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Finding the Fourth Proportional to 369,085.36, 553,860.78 and 211,621.36

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Solution

The fourth proportional to 369,085.36, 553,860.78 and 211,621.36 is: 317,565.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    369,085.36 : 553,860.78 = 211,621.36 : x
  2. Step 2: Convert to fraction form
    369,085.36/553,860.78 = 211,621.36/x
  3. Step 3: Cross multiply
    369,085.36x = 553,860.78 × 211,621.36
  4. Step 4: Simplify right side
    369,085.36x = 117,208,771,514.26
  5. Step 5: Solve for x
    x = 117,208,771,514.26/369,085.36
  6. Step 6: Final answer
    x = 317,565.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.