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Finding the Fourth Proportional to 377,321.54, 520,777.62 and 216,284.40

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Solution

The fourth proportional to 377,321.54, 520,777.62 and 216,284.40 is: 298,514.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    377,321.54 : 520,777.62 = 216,284.40 : x
  2. Step 2: Convert to fraction form
    377,321.54/520,777.62 = 216,284.40/x
  3. Step 3: Cross multiply
    377,321.54x = 520,777.62 × 216,284.40
  4. Step 4: Simplify right side
    377,321.54x = 112,636,075,075.13
  5. Step 5: Solve for x
    x = 112,636,075,075.13/377,321.54
  6. Step 6: Final answer
    x = 298,514.83

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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.