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Finding the Fourth Proportional to 553,399.08, 828,222.20 and 340,300.87

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Solution

The fourth proportional to 553,399.08, 828,222.20 and 340,300.87 is: 509,297.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,399.08 : 828,222.20 = 340,300.87 : x
  2. Step 2: Convert to fraction form
    553,399.08/828,222.20 = 340,300.87/x
  3. Step 3: Cross multiply
    553,399.08x = 828,222.20 × 340,300.87
  4. Step 4: Simplify right side
    553,399.08x = 281,844,736,949.50
  5. Step 5: Solve for x
    x = 281,844,736,949.50/553,399.08
  6. Step 6: Final answer
    x = 509,297.45

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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.