Home / 278,460.72-384,280.74-151,136.28

Finding the Fourth Proportional to 278,460.72, 384,280.74 and 151,136.28

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Solution

The fourth proportional to 278,460.72, 384,280.74 and 151,136.28 is: 208,570.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,460.72 : 384,280.74 = 151,136.28 : x
  2. Step 2: Convert to fraction form
    278,460.72/384,280.74 = 151,136.28/x
  3. Step 3: Cross multiply
    278,460.72x = 384,280.74 × 151,136.28
  4. Step 4: Simplify right side
    278,460.72x = 58,078,761,519.25
  5. Step 5: Solve for x
    x = 58,078,761,519.25/278,460.72
  6. Step 6: Final answer
    x = 208,570.75

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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.