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Finding the Fourth Proportional to 368,779.51, 553,264.34 and 200,256.58

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Solution

The fourth proportional to 368,779.51, 553,264.34 and 200,256.58 is: 300,436.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,779.51 : 553,264.34 = 200,256.58 : x
  2. Step 2: Convert to fraction form
    368,779.51/553,264.34 = 200,256.58/x
  3. Step 3: Cross multiply
    368,779.51x = 553,264.34 × 200,256.58
  4. Step 4: Simplify right side
    368,779.51x = 110,794,824,564.36
  5. Step 5: Solve for x
    x = 110,794,824,564.36/368,779.51
  6. Step 6: Final answer
    x = 300,436.50

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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.