Home / 280,714.88-421,080-93,719.68

Finding the Fourth Proportional to 280,714.88, 421,080 and 93,719.68

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Solution

The fourth proportional to 280,714.88, 421,080 and 93,719.68 is: 140,582.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,714.88 : 421,080 = 93,719.68 : x
  2. Step 2: Convert to fraction form
    280,714.88/421,080 = 93,719.68/x
  3. Step 3: Cross multiply
    280,714.88x = 421,080 × 93,719.68
  4. Step 4: Simplify right side
    280,714.88x = 39,463,482,854.40
  5. Step 5: Solve for x
    x = 39,463,482,854.40/280,714.88
  6. Step 6: Final answer
    x = 140,582.08

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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.