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Finding the Fourth Proportional to 256,011.52, 353,312.88 and 142,836.68

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Solution

The fourth proportional to 256,011.52, 353,312.88 and 142,836.68 is: 197,124.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,011.52 : 353,312.88 = 142,836.68 : x
  2. Step 2: Convert to fraction form
    256,011.52/353,312.88 = 142,836.68/x
  3. Step 3: Cross multiply
    256,011.52x = 353,312.88 × 142,836.68
  4. Step 4: Simplify right side
    256,011.52x = 50,466,038,780.44
  5. Step 5: Solve for x
    x = 50,466,038,780.44/256,011.52
  6. Step 6: Final answer
    x = 197,124.09

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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.