Home / 280,308.24-420,570.90-102,937.68

Finding the Fourth Proportional to 280,308.24, 420,570.90 and 102,937.68

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Solution

The fourth proportional to 280,308.24, 420,570.90 and 102,937.68 is: 154,446.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,308.24 : 420,570.90 = 102,937.68 : x
  2. Step 2: Convert to fraction form
    280,308.24/420,570.90 = 102,937.68/x
  3. Step 3: Cross multiply
    280,308.24x = 420,570.90 × 102,937.68
  4. Step 4: Simplify right side
    280,308.24x = 43,292,592,721.51
  5. Step 5: Solve for x
    x = 43,292,592,721.51/280,308.24
  6. Step 6: Final answer
    x = 154,446.38

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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.