Home / 428,281.80-642,131.10-162,002.40

Finding the Fourth Proportional to 428,281.80, 642,131.10 and 162,002.40

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Solution

The fourth proportional to 428,281.80, 642,131.10 and 162,002.40 is: 242,893.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,281.80 : 642,131.10 = 162,002.40 : x
  2. Step 2: Convert to fraction form
    428,281.80/642,131.10 = 162,002.40/x
  3. Step 3: Cross multiply
    428,281.80x = 642,131.10 × 162,002.40
  4. Step 4: Simplify right side
    428,281.80x = 104,026,779,314.64
  5. Step 5: Solve for x
    x = 104,026,779,314.64/428,281.80
  6. Step 6: Final answer
    x = 242,893.30

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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.