Home / 280,812.04-421,291.92-100,915.64

Finding the Fourth Proportional to 280,812.04, 421,291.92 and 100,915.64

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Solution

The fourth proportional to 280,812.04, 421,291.92 and 100,915.64 is: 151,400.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,812.04 : 421,291.92 = 100,915.64 : x
  2. Step 2: Convert to fraction form
    280,812.04/421,291.92 = 100,915.64/x
  3. Step 3: Cross multiply
    280,812.04x = 421,291.92 × 100,915.64
  4. Step 4: Simplify right side
    280,812.04x = 42,514,943,733.63
  5. Step 5: Solve for x
    x = 42,514,943,733.63/280,812.04
  6. Step 6: Final answer
    x = 151,400.00

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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.