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Finding the Fourth Proportional to 377,547.63, 520,940.21 and 216,453.21

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Solution

The fourth proportional to 377,547.63, 520,940.21 and 216,453.21 is: 298,662.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    377,547.63 : 520,940.21 = 216,453.21 : x
  2. Step 2: Convert to fraction form
    377,547.63/520,940.21 = 216,453.21/x
  3. Step 3: Cross multiply
    377,547.63x = 520,940.21 × 216,453.21
  4. Step 4: Simplify right side
    377,547.63x = 112,759,179,590.31
  5. Step 5: Solve for x
    x = 112,759,179,590.31/377,547.63
  6. Step 6: Final answer
    x = 298,662.13

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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.