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Finding the Fourth Proportional to 421,077.66, 581,087.88 and 230,086.95

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Solution

The fourth proportional to 421,077.66, 581,087.88 and 230,086.95 is: 317,520.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,077.66 : 581,087.88 = 230,086.95 : x
  2. Step 2: Convert to fraction form
    421,077.66/581,087.88 = 230,086.95/x
  3. Step 3: Cross multiply
    421,077.66x = 581,087.88 × 230,086.95
  4. Step 4: Simplify right side
    421,077.66x = 133,700,737,991.17
  5. Step 5: Solve for x
    x = 133,700,737,991.17/421,077.66
  6. Step 6: Final answer
    x = 317,520.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.