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Finding the Fourth Proportional to 459,990.45, 634,786.76 and 256,036.98

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Solution

The fourth proportional to 459,990.45, 634,786.76 and 256,036.98 is: 353,331.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    459,990.45 : 634,786.76 = 256,036.98 : x
  2. Step 2: Convert to fraction form
    459,990.45/634,786.76 = 256,036.98/x
  3. Step 3: Cross multiply
    459,990.45x = 634,786.76 × 256,036.98
  4. Step 4: Simplify right side
    459,990.45x = 162,528,883,694.20
  5. Step 5: Solve for x
    x = 162,528,883,694.20/459,990.45
  6. Step 6: Final answer
    x = 353,331.00

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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.