Home / 268,365.04-402,485.24-78,774.49

Finding the Fourth Proportional to 268,365.04, 402,485.24 and 78,774.49

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Solution

The fourth proportional to 268,365.04, 402,485.24 and 78,774.49 is: 118,143.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,365.04 : 402,485.24 = 78,774.49 : x
  2. Step 2: Convert to fraction form
    268,365.04/402,485.24 = 78,774.49/x
  3. Step 3: Cross multiply
    268,365.04x = 402,485.24 × 78,774.49
  4. Step 4: Simplify right side
    268,365.04x = 31,705,570,213.57
  5. Step 5: Solve for x
    x = 31,705,570,213.57/268,365.04
  6. Step 6: Final answer
    x = 118,143.45

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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.