Home / 388,865.40-536,634.13-210,017.40

Finding the Fourth Proportional to 388,865.40, 536,634.13 and 210,017.40

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Solution

The fourth proportional to 388,865.40, 536,634.13 and 210,017.40 is: 289,823.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,865.40 : 536,634.13 = 210,017.40 : x
  2. Step 2: Convert to fraction form
    388,865.40/536,634.13 = 210,017.40/x
  3. Step 3: Cross multiply
    388,865.40x = 536,634.13 × 210,017.40
  4. Step 4: Simplify right side
    388,865.40x = 112,702,504,733.86
  5. Step 5: Solve for x
    x = 112,702,504,733.86/388,865.40
  6. Step 6: Final answer
    x = 289,823.95

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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.