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Finding the Fourth Proportional to 459,540.72, 634,223.16 and 258,336.72

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Solution

The fourth proportional to 459,540.72, 634,223.16 and 258,336.72 is: 356,536.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    459,540.72 : 634,223.16 = 258,336.72 : x
  2. Step 2: Convert to fraction form
    459,540.72/634,223.16 = 258,336.72/x
  3. Step 3: Cross multiply
    459,540.72x = 634,223.16 × 258,336.72
  4. Step 4: Simplify right side
    459,540.72x = 163,843,130,902.44
  5. Step 5: Solve for x
    x = 163,843,130,902.44/459,540.72
  6. Step 6: Final answer
    x = 356,536.70

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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.