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Finding the Fourth Proportional to 492,980.16, 680,312.56 and 266,625.64

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Solution

The fourth proportional to 492,980.16, 680,312.56 and 266,625.64 is: 367,943.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,980.16 : 680,312.56 = 266,625.64 : x
  2. Step 2: Convert to fraction form
    492,980.16/680,312.56 = 266,625.64/x
  3. Step 3: Cross multiply
    492,980.16x = 680,312.56 × 266,625.64
  4. Step 4: Simplify right side
    492,980.16x = 181,388,771,710.04
  5. Step 5: Solve for x
    x = 181,388,771,710.04/492,980.16
  6. Step 6: Final answer
    x = 367,943.35

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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.