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Finding the Fourth Proportional to 256,496.79, 384,751.80 and 121,529.19

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Solution

The fourth proportional to 256,496.79, 384,751.80 and 121,529.19 is: 182,296.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,496.79 : 384,751.80 = 121,529.19 : x
  2. Step 2: Convert to fraction form
    256,496.79/384,751.80 = 121,529.19/x
  3. Step 3: Cross multiply
    256,496.79x = 384,751.80 × 121,529.19
  4. Step 4: Simplify right side
    256,496.79x = 46,758,574,605.04
  5. Step 5: Solve for x
    x = 46,758,574,605.04/256,496.79
  6. Step 6: Final answer
    x = 182,296.92

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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.