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Finding the Fourth Proportional to 256,573.20, 384,859.80 and 190,307.10

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Solution

The fourth proportional to 256,573.20, 384,859.80 and 190,307.10 is: 285,460.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,573.20 : 384,859.80 = 190,307.10 : x
  2. Step 2: Convert to fraction form
    256,573.20/384,859.80 = 190,307.10/x
  3. Step 3: Cross multiply
    256,573.20x = 384,859.80 × 190,307.10
  4. Step 4: Simplify right side
    256,573.20x = 73,241,552,444.58
  5. Step 5: Solve for x
    x = 73,241,552,444.58/256,573.20
  6. Step 6: Final answer
    x = 285,460.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.