Home / 278,196.08-383,929.64-157,337.40

Finding the Fourth Proportional to 278,196.08, 383,929.64 and 157,337.40

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Solution

The fourth proportional to 278,196.08, 383,929.64 and 157,337.40 is: 217,136.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,196.08 : 383,929.64 = 157,337.40 : x
  2. Step 2: Convert to fraction form
    278,196.08/383,929.64 = 157,337.40/x
  3. Step 3: Cross multiply
    278,196.08x = 383,929.64 × 157,337.40
  4. Step 4: Simplify right side
    278,196.08x = 60,406,491,340.54
  5. Step 5: Solve for x
    x = 60,406,491,340.54/278,196.08
  6. Step 6: Final answer
    x = 217,136.39

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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.