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Finding the Fourth Proportional to 388,898.25, 536,679.95 and 210,050.25

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Solution

The fourth proportional to 388,898.25, 536,679.95 and 210,050.25 is: 289,869.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,898.25 : 536,679.95 = 210,050.25 : x
  2. Step 2: Convert to fraction form
    388,898.25/536,679.95 = 210,050.25/x
  3. Step 3: Cross multiply
    388,898.25x = 536,679.95 × 210,050.25
  4. Step 4: Simplify right side
    388,898.25x = 112,729,756,617.24
  5. Step 5: Solve for x
    x = 112,729,756,617.24/388,898.25
  6. Step 6: Final answer
    x = 289,869.54

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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.