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Finding the Fourth Proportional to 558,271.68, 770,115.84 and 388,210.56

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Solution

The fourth proportional to 558,271.68, 770,115.84 and 388,210.56 is: 535,522.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    558,271.68 : 770,115.84 = 388,210.56 : x
  2. Step 2: Convert to fraction form
    558,271.68/770,115.84 = 388,210.56/x
  3. Step 3: Cross multiply
    558,271.68x = 770,115.84 × 388,210.56
  4. Step 4: Simplify right side
    558,271.68x = 298,967,101,511.27
  5. Step 5: Solve for x
    x = 298,967,101,511.27/558,271.68
  6. Step 6: Final answer
    x = 535,522.60

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.