Home / 283,206.72-390,836.35-155,894.16

Finding the Fourth Proportional to 283,206.72, 390,836.35 and 155,894.16

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Solution

The fourth proportional to 283,206.72, 390,836.35 and 155,894.16 is: 215,140.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,206.72 : 390,836.35 = 155,894.16 : x
  2. Step 2: Convert to fraction form
    283,206.72/390,836.35 = 155,894.16/x
  3. Step 3: Cross multiply
    283,206.72x = 390,836.35 × 155,894.16
  4. Step 4: Simplify right side
    283,206.72x = 60,929,104,480.72
  5. Step 5: Solve for x
    x = 60,929,104,480.72/283,206.72
  6. Step 6: Final answer
    x = 215,140.04

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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.