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Finding the Fourth Proportional to 368,847.60, 553,271.40 and 211,383.60

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Solution

The fourth proportional to 368,847.60, 553,271.40 and 211,383.60 is: 317,075.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,847.60 : 553,271.40 = 211,383.60 : x
  2. Step 2: Convert to fraction form
    368,847.60/553,271.40 = 211,383.60/x
  3. Step 3: Cross multiply
    368,847.60x = 553,271.40 × 211,383.60
  4. Step 4: Simplify right side
    368,847.60x = 116,952,500,309.04
  5. Step 5: Solve for x
    x = 116,952,500,309.04/368,847.60
  6. Step 6: Final answer
    x = 317,075.40

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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.