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Finding the Fourth Proportional to 370,331.61, 511,068.11 and 209,193.45

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Solution

The fourth proportional to 370,331.61, 511,068.11 and 209,193.45 is: 288,692.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    370,331.61 : 511,068.11 = 209,193.45 : x
  2. Step 2: Convert to fraction form
    370,331.61/511,068.11 = 209,193.45/x
  3. Step 3: Cross multiply
    370,331.61x = 511,068.11 × 209,193.45
  4. Step 4: Simplify right side
    370,331.61x = 106,912,101,115.88
  5. Step 5: Solve for x
    x = 106,912,101,115.88/370,331.61
  6. Step 6: Final answer
    x = 288,692.89

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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.