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Finding the Fourth Proportional to 456,321.60, 684,579.60 and 140,810.40

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Solution

The fourth proportional to 456,321.60, 684,579.60 and 140,810.40 is: 211,245.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    456,321.60 : 684,579.60 = 140,810.40 : x
  2. Step 2: Convert to fraction form
    456,321.60/684,579.60 = 140,810.40/x
  3. Step 3: Cross multiply
    456,321.60x = 684,579.60 × 140,810.40
  4. Step 4: Simplify right side
    456,321.60x = 96,395,927,307.84
  5. Step 5: Solve for x
    x = 96,395,927,307.84/456,321.60
  6. Step 6: Final answer
    x = 211,245.59

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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.