Home / 280,732.16-387,408.12-153,405.44

Finding the Fourth Proportional to 280,732.16, 387,408.12 and 153,405.44

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Solution

The fourth proportional to 280,732.16, 387,408.12 and 153,405.44 is: 211,698.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,732.16 : 387,408.12 = 153,405.44 : x
  2. Step 2: Convert to fraction form
    280,732.16/387,408.12 = 153,405.44/x
  3. Step 3: Cross multiply
    280,732.16x = 387,408.12 × 153,405.44
  4. Step 4: Simplify right side
    280,732.16x = 59,430,513,108.17
  5. Step 5: Solve for x
    x = 59,430,513,108.17/280,732.16
  6. Step 6: Final answer
    x = 211,698.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.