Home / 388,971.06-536,779.26-210,123.06

Finding the Fourth Proportional to 388,971.06, 536,779.26 and 210,123.06

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Solution

The fourth proportional to 388,971.06, 536,779.26 and 210,123.06 is: 289,969.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,971.06 : 536,779.26 = 210,123.06 : x
  2. Step 2: Convert to fraction form
    388,971.06/536,779.26 = 210,123.06/x
  3. Step 3: Cross multiply
    388,971.06x = 536,779.26 × 210,123.06
  4. Step 4: Simplify right side
    388,971.06x = 112,789,700,655.74
  5. Step 5: Solve for x
    x = 112,789,700,655.74/388,971.06
  6. Step 6: Final answer
    x = 289,969.39

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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.