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Finding the Fourth Proportional to 377,353.78, 520,739.78 and 216,303.78

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Solution

The fourth proportional to 377,353.78, 520,739.78 and 216,303.78 is: 298,494.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    377,353.78 : 520,739.78 = 216,303.78 : x
  2. Step 2: Convert to fraction form
    377,353.78/520,739.78 = 216,303.78/x
  3. Step 3: Cross multiply
    377,353.78x = 520,739.78 × 216,303.78
  4. Step 4: Simplify right side
    377,353.78x = 112,637,982,810.37
  5. Step 5: Solve for x
    x = 112,637,982,810.37/377,353.78
  6. Step 6: Final answer
    x = 298,494.38

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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.