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Finding the Fourth Proportional to 437,980.80, 657,230.40 and 288,652.80

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Solution

The fourth proportional to 437,980.80, 657,230.40 and 288,652.80 is: 433,150.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    437,980.80 : 657,230.40 = 288,652.80 : x
  2. Step 2: Convert to fraction form
    437,980.80/657,230.40 = 288,652.80/x
  3. Step 3: Cross multiply
    437,980.80x = 657,230.40 × 288,652.80
  4. Step 4: Simplify right side
    437,980.80x = 189,711,395,205.12
  5. Step 5: Solve for x
    x = 189,711,395,205.12/437,980.80
  6. Step 6: Final answer
    x = 433,150.03

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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.