Home / 268,385.18-402,643.67-133,512.89

Finding the Fourth Proportional to 268,385.18, 402,643.67 and 133,512.89

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Solution

The fourth proportional to 268,385.18, 402,643.67 and 133,512.89 is: 200,302.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,385.18 : 402,643.67 = 133,512.89 : x
  2. Step 2: Convert to fraction form
    268,385.18/402,643.67 = 133,512.89/x
  3. Step 3: Cross multiply
    268,385.18x = 402,643.67 × 133,512.89
  4. Step 4: Simplify right side
    268,385.18x = 53,758,117,341.12
  5. Step 5: Solve for x
    x = 53,758,117,341.12/268,385.18
  6. Step 6: Final answer
    x = 200,302.11

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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.