Home / 282,778.46-390,241.72-155,457.26

Finding the Fourth Proportional to 282,778.46, 390,241.72 and 155,457.26

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Solution

The fourth proportional to 282,778.46, 390,241.72 and 155,457.26 is: 214,535.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,778.46 : 390,241.72 = 155,457.26 : x
  2. Step 2: Convert to fraction form
    282,778.46/390,241.72 = 155,457.26/x
  3. Step 3: Cross multiply
    282,778.46x = 390,241.72 × 155,457.26
  4. Step 4: Simplify right side
    282,778.46x = 60,665,906,189.04
  5. Step 5: Solve for x
    x = 60,665,906,189.04/282,778.46
  6. Step 6: Final answer
    x = 214,535.11

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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.