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Finding the Fourth Proportional to 363,907.02, 545,893.35 and 139,258.38

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Solution

The fourth proportional to 363,907.02, 545,893.35 and 139,258.38 is: 208,900.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    363,907.02 : 545,893.35 = 139,258.38 : x
  2. Step 2: Convert to fraction form
    363,907.02/545,893.35 = 139,258.38/x
  3. Step 3: Cross multiply
    363,907.02x = 545,893.35 × 139,258.38
  4. Step 4: Simplify right side
    363,907.02x = 76,020,223,573.77
  5. Step 5: Solve for x
    x = 76,020,223,573.77/363,907.02
  6. Step 6: Final answer
    x = 208,900.13

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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.