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Finding the Fourth Proportional to 518,311.65, 777,813.08 and 237,684.45

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Solution

The fourth proportional to 518,311.65, 777,813.08 and 237,684.45 is: 356,685.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,311.65 : 777,813.08 = 237,684.45 : x
  2. Step 2: Convert to fraction form
    518,311.65/777,813.08 = 237,684.45/x
  3. Step 3: Cross multiply
    518,311.65x = 777,813.08 × 237,684.45
  4. Step 4: Simplify right side
    518,311.65x = 184,874,072,934.18
  5. Step 5: Solve for x
    x = 184,874,072,934.18/518,311.65
  6. Step 6: Final answer
    x = 356,685.16

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.