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Finding the Fourth Proportional to 380,436.85, 525,041.10 and 210,670.96

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Solution

The fourth proportional to 380,436.85, 525,041.10 and 210,670.96 is: 290,747.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,436.85 : 525,041.10 = 210,670.96 : x
  2. Step 2: Convert to fraction form
    380,436.85/525,041.10 = 210,670.96/x
  3. Step 3: Cross multiply
    380,436.85x = 525,041.10 × 210,670.96
  4. Step 4: Simplify right side
    380,436.85x = 110,610,912,576.46
  5. Step 5: Solve for x
    x = 110,610,912,576.46/380,436.85
  6. Step 6: Final answer
    x = 290,747.10

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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.