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Finding the Fourth Proportional to 628,060.80, 942,148.80 and 254,006.40

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Solution

The fourth proportional to 628,060.80, 942,148.80 and 254,006.40 is: 381,032.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,060.80 : 942,148.80 = 254,006.40 : x
  2. Step 2: Convert to fraction form
    628,060.80/942,148.80 = 254,006.40/x
  3. Step 3: Cross multiply
    628,060.80x = 942,148.80 × 254,006.40
  4. Step 4: Simplify right side
    628,060.80x = 239,311,824,952.32
  5. Step 5: Solve for x
    x = 239,311,824,952.32/628,060.80
  6. Step 6: Final answer
    x = 381,032.90

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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.