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Finding the Fourth Proportional to 487,893.80, 731,840.70 and 251,157.80

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Solution

The fourth proportional to 487,893.80, 731,840.70 and 251,157.80 is: 376,736.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,893.80 : 731,840.70 = 251,157.80 : x
  2. Step 2: Convert to fraction form
    487,893.80/731,840.70 = 251,157.80/x
  3. Step 3: Cross multiply
    487,893.80x = 731,840.70 × 251,157.80
  4. Step 4: Simplify right side
    487,893.80x = 183,807,500,162.46
  5. Step 5: Solve for x
    x = 183,807,500,162.46/487,893.80
  6. Step 6: Final answer
    x = 376,736.70

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Similar ratio
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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.