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Finding the Fourth Proportional to 377,437.67, 520,878.32 and 216,323.81

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Solution

The fourth proportional to 377,437.67, 520,878.32 and 216,323.81 is: 298,535.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    377,437.67 : 520,878.32 = 216,323.81 : x
  2. Step 2: Convert to fraction form
    377,437.67/520,878.32 = 216,323.81/x
  3. Step 3: Cross multiply
    377,437.67x = 520,878.32 × 216,323.81
  4. Step 4: Simplify right side
    377,437.67x = 112,678,381,807.30
  5. Step 5: Solve for x
    x = 112,678,381,807.30/377,437.67
  6. Step 6: Final answer
    x = 298,535.07

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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.