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Finding the Fourth Proportional to 256,619, 385,088.88 and 123,513.32

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Solution

The fourth proportional to 256,619, 385,088.88 and 123,513.32 is: 185,347.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,619 : 385,088.88 = 123,513.32 : x
  2. Step 2: Convert to fraction form
    256,619/385,088.88 = 123,513.32/x
  3. Step 3: Cross multiply
    256,619x = 385,088.88 × 123,513.32
  4. Step 4: Simplify right side
    256,619x = 47,563,606,063.88
  5. Step 5: Solve for x
    x = 47,563,606,063.88/256,619
  6. Step 6: Final answer
    x = 185,347.17

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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.