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Finding the Fourth Proportional to 283,037.63, 390,591.92 and 155,710.49

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Solution

The fourth proportional to 283,037.63, 390,591.92 and 155,710.49 is: 214,880.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,037.63 : 390,591.92 = 155,710.49 : x
  2. Step 2: Convert to fraction form
    283,037.63/390,591.92 = 155,710.49/x
  3. Step 3: Cross multiply
    283,037.63x = 390,591.92 × 155,710.49
  4. Step 4: Simplify right side
    283,037.63x = 60,819,257,689.56
  5. Step 5: Solve for x
    x = 60,819,257,689.56/283,037.63
  6. Step 6: Final answer
    x = 214,880.47

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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.