Home / 268,427.34-402,541.29-78,835.50

Finding the Fourth Proportional to 268,427.34, 402,541.29 and 78,835.50

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Solution

The fourth proportional to 268,427.34, 402,541.29 and 78,835.50 is: 118,223.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,427.34 : 402,541.29 = 78,835.50 : x
  2. Step 2: Convert to fraction form
    268,427.34/402,541.29 = 78,835.50/x
  3. Step 3: Cross multiply
    268,427.34x = 402,541.29 × 78,835.50
  4. Step 4: Simplify right side
    268,427.34x = 31,734,543,867.80
  5. Step 5: Solve for x
    x = 31,734,543,867.80/268,427.34
  6. Step 6: Final answer
    x = 118,223.96

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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.