Home / 260,021.10-390,031.65-102,254.70

Finding the Fourth Proportional to 260,021.10, 390,031.65 and 102,254.70

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Solution

The fourth proportional to 260,021.10, 390,031.65 and 102,254.70 is: 153,382.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,021.10 : 390,031.65 = 102,254.70 : x
  2. Step 2: Convert to fraction form
    260,021.10/390,031.65 = 102,254.70/x
  3. Step 3: Cross multiply
    260,021.10x = 390,031.65 × 102,254.70
  4. Step 4: Simplify right side
    260,021.10x = 39,882,569,361.26
  5. Step 5: Solve for x
    x = 39,882,569,361.26/260,021.10
  6. Step 6: Final answer
    x = 153,382.05

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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.