Home / 259,903.65-390,001.28-110,118.45

Finding the Fourth Proportional to 259,903.65, 390,001.28 and 110,118.45

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Solution

The fourth proportional to 259,903.65, 390,001.28 and 110,118.45 is: 165,239.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,903.65 : 390,001.28 = 110,118.45 : x
  2. Step 2: Convert to fraction form
    259,903.65/390,001.28 = 110,118.45/x
  3. Step 3: Cross multiply
    259,903.65x = 390,001.28 × 110,118.45
  4. Step 4: Simplify right side
    259,903.65x = 42,946,335,901.02
  5. Step 5: Solve for x
    x = 42,946,335,901.02/259,903.65
  6. Step 6: Final answer
    x = 165,239.45

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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.