Home / 278,699.10-384,606.78-151,374.72

Finding the Fourth Proportional to 278,699.10, 384,606.78 and 151,374.72

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Solution

The fourth proportional to 278,699.10, 384,606.78 and 151,374.72 is: 208,898.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,699.10 : 384,606.78 = 151,374.72 : x
  2. Step 2: Convert to fraction form
    278,699.10/384,606.78 = 151,374.72/x
  3. Step 3: Cross multiply
    278,699.10x = 384,606.78 × 151,374.72
  4. Step 4: Simplify right side
    278,699.10x = 58,219,743,632.60
  5. Step 5: Solve for x
    x = 58,219,743,632.60/278,699.10
  6. Step 6: Final answer
    x = 208,898.21

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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.