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Finding the Fourth Proportional to 368,907.57, 553,278.30 and 240,783.54

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Solution

The fourth proportional to 368,907.57, 553,278.30 and 240,783.54 is: 361,121.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,907.57 : 553,278.30 = 240,783.54 : x
  2. Step 2: Convert to fraction form
    368,907.57/553,278.30 = 240,783.54/x
  3. Step 3: Cross multiply
    368,907.57x = 553,278.30 × 240,783.54
  4. Step 4: Simplify right side
    368,907.57x = 133,220,307,679.18
  5. Step 5: Solve for x
    x = 133,220,307,679.18/368,907.57
  6. Step 6: Final answer
    x = 361,121.10

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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.