Home / 317,972.40-438,804.30-172,779.56

Finding the Fourth Proportional to 317,972.40, 438,804.30 and 172,779.56

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Solution

The fourth proportional to 317,972.40, 438,804.30 and 172,779.56 is: 238,437.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,972.40 : 438,804.30 = 172,779.56 : x
  2. Step 2: Convert to fraction form
    317,972.40/438,804.30 = 172,779.56/x
  3. Step 3: Cross multiply
    317,972.40x = 438,804.30 × 172,779.56
  4. Step 4: Simplify right side
    317,972.40x = 75,816,413,880.11
  5. Step 5: Solve for x
    x = 75,816,413,880.11/317,972.40
  6. Step 6: Final answer
    x = 238,437.09

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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.