Home / 283,065.40-390,630.92-155,749.20

Finding the Fourth Proportional to 283,065.40, 390,630.92 and 155,749.20

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Solution

The fourth proportional to 283,065.40, 390,630.92 and 155,749.20 is: 214,934.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,065.40 : 390,630.92 = 155,749.20 : x
  2. Step 2: Convert to fraction form
    283,065.40/390,630.92 = 155,749.20/x
  3. Step 3: Cross multiply
    283,065.40x = 390,630.92 × 155,749.20
  4. Step 4: Simplify right side
    283,065.40x = 60,840,453,285.26
  5. Step 5: Solve for x
    x = 60,840,453,285.26/283,065.40
  6. Step 6: Final answer
    x = 214,934.26

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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.