Home / 259,620.16-390,157.28-154,455.36

Finding the Fourth Proportional to 259,620.16, 390,157.28 and 154,455.36

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Solution

The fourth proportional to 259,620.16, 390,157.28 and 154,455.36 is: 232,115.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,620.16 : 390,157.28 = 154,455.36 : x
  2. Step 2: Convert to fraction form
    259,620.16/390,157.28 = 154,455.36/x
  3. Step 3: Cross multiply
    259,620.16x = 390,157.28 × 154,455.36
  4. Step 4: Simplify right side
    259,620.16x = 60,261,883,139.02
  5. Step 5: Solve for x
    x = 60,261,883,139.02/259,620.16
  6. Step 6: Final answer
    x = 232,115.58

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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.