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Finding the Fourth Proportional to 377,085.12, 520,302.86 and 211,518.42

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Solution

The fourth proportional to 377,085.12, 520,302.86 and 211,518.42 is: 291,853.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    377,085.12 : 520,302.86 = 211,518.42 : x
  2. Step 2: Convert to fraction form
    377,085.12/520,302.86 = 211,518.42/x
  3. Step 3: Cross multiply
    377,085.12x = 520,302.86 × 211,518.42
  4. Step 4: Simplify right side
    377,085.12x = 110,053,637,811.09
  5. Step 5: Solve for x
    x = 110,053,637,811.09/377,085.12
  6. Step 6: Final answer
    x = 291,853.57

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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.