Home / 438,008.40-657,012.60-105,584.40

Finding the Fourth Proportional to 438,008.40, 657,012.60 and 105,584.40

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Solution

The fourth proportional to 438,008.40, 657,012.60 and 105,584.40 is: 158,376.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,008.40 : 657,012.60 = 105,584.40 : x
  2. Step 2: Convert to fraction form
    438,008.40/657,012.60 = 105,584.40/x
  3. Step 3: Cross multiply
    438,008.40x = 657,012.60 × 105,584.40
  4. Step 4: Simplify right side
    438,008.40x = 69,370,281,163.44
  5. Step 5: Solve for x
    x = 69,370,281,163.44/438,008.40
  6. Step 6: Final answer
    x = 158,376.60

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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.