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Finding the Fourth Proportional to 380,549.61, 525,194.01 and 210,783.87

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Solution

The fourth proportional to 380,549.61, 525,194.01 and 210,783.87 is: 290,901.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,549.61 : 525,194.01 = 210,783.87 : x
  2. Step 2: Convert to fraction form
    380,549.61/525,194.01 = 210,783.87/x
  3. Step 3: Cross multiply
    380,549.61x = 525,194.01 × 210,783.87
  4. Step 4: Simplify right side
    380,549.61x = 110,702,425,928.62
  5. Step 5: Solve for x
    x = 110,702,425,928.62/380,549.61
  6. Step 6: Final answer
    x = 290,901.43

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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.