Home / 268,250.49-402,438.02-78,703.20

Finding the Fourth Proportional to 268,250.49, 402,438.02 and 78,703.20

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Solution

The fourth proportional to 268,250.49, 402,438.02 and 78,703.20 is: 118,073.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,250.49 : 402,438.02 = 78,703.20 : x
  2. Step 2: Convert to fraction form
    268,250.49/402,438.02 = 78,703.20/x
  3. Step 3: Cross multiply
    268,250.49x = 402,438.02 × 78,703.20
  4. Step 4: Simplify right side
    268,250.49x = 31,673,159,975.66
  5. Step 5: Solve for x
    x = 31,673,159,975.66/268,250.49
  6. Step 6: Final answer
    x = 118,073.07

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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.