Home / 283,063.20-390,627.92-155,746.72

Finding the Fourth Proportional to 283,063.20, 390,627.92 and 155,746.72

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Solution

The fourth proportional to 283,063.20, 390,627.92 and 155,746.72 is: 214,930.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,063.20 : 390,627.92 = 155,746.72 : x
  2. Step 2: Convert to fraction form
    283,063.20/390,627.92 = 155,746.72/x
  3. Step 3: Cross multiply
    283,063.20x = 390,627.92 × 155,746.72
  4. Step 4: Simplify right side
    283,063.20x = 60,839,017,280.42
  5. Step 5: Solve for x
    x = 60,839,017,280.42/283,063.20
  6. Step 6: Final answer
    x = 214,930.86

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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.