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Finding the Fourth Proportional to 356,578.02, 492,004.94 and 211,319.77

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Solution

The fourth proportional to 356,578.02, 492,004.94 and 211,319.77 is: 291,578.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,578.02 : 492,004.94 = 211,319.77 : x
  2. Step 2: Convert to fraction form
    356,578.02/492,004.94 = 211,319.77/x
  3. Step 3: Cross multiply
    356,578.02x = 492,004.94 × 211,319.77
  4. Step 4: Simplify right side
    356,578.02x = 103,970,371,110.52
  5. Step 5: Solve for x
    x = 103,970,371,110.52/356,578.02
  6. Step 6: Final answer
    x = 291,578.19

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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.