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Finding the Fourth Proportional to 388,858.90, 536,625.17 and 210,010.90

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Solution

The fourth proportional to 388,858.90, 536,625.17 and 210,010.90 is: 289,814.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,858.90 : 536,625.17 = 210,010.90 : x
  2. Step 2: Convert to fraction form
    388,858.90/536,625.17 = 210,010.90/x
  3. Step 3: Cross multiply
    388,858.90x = 536,625.17 × 210,010.90
  4. Step 4: Simplify right side
    388,858.90x = 112,697,134,914.35
  5. Step 5: Solve for x
    x = 112,697,134,914.35/388,858.90
  6. Step 6: Final answer
    x = 289,814.98

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1.5x scale

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.