Home / 278,609.47-384,482.64-151,285.10

Finding the Fourth Proportional to 278,609.47, 384,482.64 and 151,285.10

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Solution

The fourth proportional to 278,609.47, 384,482.64 and 151,285.10 is: 208,774.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,609.47 : 384,482.64 = 151,285.10 : x
  2. Step 2: Convert to fraction form
    278,609.47/384,482.64 = 151,285.10/x
  3. Step 3: Cross multiply
    278,609.47x = 384,482.64 × 151,285.10
  4. Step 4: Simplify right side
    278,609.47x = 58,166,494,640.66
  5. Step 5: Solve for x
    x = 58,166,494,640.66/278,609.47
  6. Step 6: Final answer
    x = 208,774.29

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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.