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Finding the Fourth Proportional to 459,987.44, 634,789.84 and 256,040.57

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Solution

The fourth proportional to 459,987.44, 634,789.84 and 256,040.57 is: 353,339.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    459,987.44 : 634,789.84 = 256,040.57 : x
  2. Step 2: Convert to fraction form
    459,987.44/634,789.84 = 256,040.57/x
  3. Step 3: Cross multiply
    459,987.44x = 634,789.84 × 256,040.57
  4. Step 4: Simplify right side
    459,987.44x = 162,531,952,463.81
  5. Step 5: Solve for x
    x = 162,531,952,463.81/459,987.44
  6. Step 6: Final answer
    x = 353,339.98

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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.