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Finding the Fourth Proportional to 256,519.94, 384,779.91 and 69,531.44

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Solution

The fourth proportional to 256,519.94, 384,779.91 and 69,531.44 is: 104,297.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,519.94 : 384,779.91 = 69,531.44 : x
  2. Step 2: Convert to fraction form
    256,519.94/384,779.91 = 69,531.44/x
  3. Step 3: Cross multiply
    256,519.94x = 384,779.91 × 69,531.44
  4. Step 4: Simplify right side
    256,519.94x = 26,754,301,225.37
  5. Step 5: Solve for x
    x = 26,754,301,225.37/256,519.94
  6. Step 6: Final answer
    x = 104,297.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.