Home / 284,439.90-392,528.40-155,380.14

Finding the Fourth Proportional to 284,439.90, 392,528.40 and 155,380.14

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Solution

The fourth proportional to 284,439.90, 392,528.40 and 155,380.14 is: 214,425.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    284,439.90 : 392,528.40 = 155,380.14 : x
  2. Step 2: Convert to fraction form
    284,439.90/392,528.40 = 155,380.14/x
  3. Step 3: Cross multiply
    284,439.90x = 392,528.40 × 155,380.14
  4. Step 4: Simplify right side
    284,439.90x = 60,991,117,745.98
  5. Step 5: Solve for x
    x = 60,991,117,745.98/284,439.90
  6. Step 6: Final answer
    x = 214,425.32

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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.