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Finding the Fourth Proportional to 369,090.78, 509,347.02 and 207,948.30

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Solution

The fourth proportional to 369,090.78, 509,347.02 and 207,948.30 is: 286,969.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    369,090.78 : 509,347.02 = 207,948.30 : x
  2. Step 2: Convert to fraction form
    369,090.78/509,347.02 = 207,948.30/x
  3. Step 3: Cross multiply
    369,090.78x = 509,347.02 × 207,948.30
  4. Step 4: Simplify right side
    369,090.78x = 105,917,846,919.07
  5. Step 5: Solve for x
    x = 105,917,846,919.07/369,090.78
  6. Step 6: Final answer
    x = 286,969.64

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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.