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Finding the Fourth Proportional to 511,145.02, 705,385.02 and 281,710.63

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Solution

The fourth proportional to 511,145.02, 705,385.02 and 281,710.63 is: 388,763.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    511,145.02 : 705,385.02 = 281,710.63 : x
  2. Step 2: Convert to fraction form
    511,145.02/705,385.02 = 281,710.63/x
  3. Step 3: Cross multiply
    511,145.02x = 705,385.02 × 281,710.63
  4. Step 4: Simplify right side
    511,145.02x = 198,714,458,376.76
  5. Step 5: Solve for x
    x = 198,714,458,376.76/511,145.02
  6. Step 6: Final answer
    x = 388,763.37

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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.