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Finding the Fourth Proportional to 456,045.40, 684,003.30 and 156,539.80

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Solution

The fourth proportional to 456,045.40, 684,003.30 and 156,539.80 is: 234,787.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    456,045.40 : 684,003.30 = 156,539.80 : x
  2. Step 2: Convert to fraction form
    456,045.40/684,003.30 = 156,539.80/x
  3. Step 3: Cross multiply
    456,045.40x = 684,003.30 × 156,539.80
  4. Step 4: Simplify right side
    456,045.40x = 107,073,739,781.34
  5. Step 5: Solve for x
    x = 107,073,739,781.34/456,045.40
  6. Step 6: Final answer
    x = 234,787.46

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.