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Finding the Fourth Proportional to 306,036.20, 459,054.30 and 257,047.40

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Solution

The fourth proportional to 306,036.20, 459,054.30 and 257,047.40 is: 385,571.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,036.20 : 459,054.30 = 257,047.40 : x
  2. Step 2: Convert to fraction form
    306,036.20/459,054.30 = 257,047.40/x
  3. Step 3: Cross multiply
    306,036.20x = 459,054.30 × 257,047.40
  4. Step 4: Simplify right side
    306,036.20x = 117,998,714,273.82
  5. Step 5: Solve for x
    x = 117,998,714,273.82/306,036.20
  6. Step 6: Final answer
    x = 385,571.10

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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.