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Finding the Fourth Proportional to 553,265.20, 828,877.20 and 315,902.80

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Solution

The fourth proportional to 553,265.20, 828,877.20 and 315,902.80 is: 473,271.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,265.20 : 828,877.20 = 315,902.80 : x
  2. Step 2: Convert to fraction form
    553,265.20/828,877.20 = 315,902.80/x
  3. Step 3: Cross multiply
    553,265.20x = 828,877.20 × 315,902.80
  4. Step 4: Simplify right side
    553,265.20x = 261,844,628,336.16
  5. Step 5: Solve for x
    x = 261,844,628,336.16/553,265.20
  6. Step 6: Final answer
    x = 473,271.46

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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.