Home / 280,859.04-421,288.48-112,455.20

Finding the Fourth Proportional to 280,859.04, 421,288.48 and 112,455.20

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Solution

The fourth proportional to 280,859.04, 421,288.48 and 112,455.20 is: 168,682.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,859.04 : 421,288.48 = 112,455.20 : x
  2. Step 2: Convert to fraction form
    280,859.04/421,288.48 = 112,455.20/x
  3. Step 3: Cross multiply
    280,859.04x = 421,288.48 × 112,455.20
  4. Step 4: Simplify right side
    280,859.04x = 47,376,080,276.10
  5. Step 5: Solve for x
    x = 47,376,080,276.10/280,859.04
  6. Step 6: Final answer
    x = 168,682.77

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1.5x scale

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.