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Finding the Fourth Proportional to 449,907.40, 620,853.30 and 258,927.40

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Solution

The fourth proportional to 449,907.40, 620,853.30 and 258,927.40 is: 357,308.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,907.40 : 620,853.30 = 258,927.40 : x
  2. Step 2: Convert to fraction form
    449,907.40/620,853.30 = 258,927.40/x
  3. Step 3: Cross multiply
    449,907.40x = 620,853.30 × 258,927.40
  4. Step 4: Simplify right side
    449,907.40x = 160,755,930,750.42
  5. Step 5: Solve for x
    x = 160,755,930,750.42/449,907.40
  6. Step 6: Final answer
    x = 357,308.93

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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.