Home / 388,826.28-536,580.24-209,978.28

Finding the Fourth Proportional to 388,826.28, 536,580.24 and 209,978.28

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Solution

The fourth proportional to 388,826.28, 536,580.24 and 209,978.28 is: 289,770.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,826.28 : 536,580.24 = 209,978.28 : x
  2. Step 2: Convert to fraction form
    388,826.28/536,580.24 = 209,978.28/x
  3. Step 3: Cross multiply
    388,826.28x = 536,580.24 × 209,978.28
  4. Step 4: Simplify right side
    388,826.28x = 112,670,195,877.19
  5. Step 5: Solve for x
    x = 112,670,195,877.19/388,826.28
  6. Step 6: Final answer
    x = 289,770.01

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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.