Home / 256,869.63-385,259.33-79,378.18

Finding the Fourth Proportional to 256,869.63, 385,259.33 and 79,378.18

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Solution

The fourth proportional to 256,869.63, 385,259.33 and 79,378.18 is: 119,053.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,869.63 : 385,259.33 = 79,378.18 : x
  2. Step 2: Convert to fraction form
    256,869.63/385,259.33 = 79,378.18/x
  3. Step 3: Cross multiply
    256,869.63x = 385,259.33 × 79,378.18
  4. Step 4: Simplify right side
    256,869.63x = 30,581,184,443.42
  5. Step 5: Solve for x
    x = 30,581,184,443.42/256,869.63
  6. Step 6: Final answer
    x = 119,053.33

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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.