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Finding the Fourth Proportional to 455,701.60, 628,870.72 and 251,750.08

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Solution

The fourth proportional to 455,701.60, 628,870.72 and 251,750.08 is: 347,416.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,701.60 : 628,870.72 = 251,750.08 : x
  2. Step 2: Convert to fraction form
    455,701.60/628,870.72 = 251,750.08/x
  3. Step 3: Cross multiply
    455,701.60x = 628,870.72 × 251,750.08
  4. Step 4: Simplify right side
    455,701.60x = 158,318,254,069.66
  5. Step 5: Solve for x
    x = 158,318,254,069.66/455,701.60
  6. Step 6: Final answer
    x = 347,416.50

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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.