Home / 280,748.71-387,433.38-153,424.31

Finding the Fourth Proportional to 280,748.71, 387,433.38 and 153,424.31

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Solution

The fourth proportional to 280,748.71, 387,433.38 and 153,424.31 is: 211,725.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,748.71 : 387,433.38 = 153,424.31 : x
  2. Step 2: Convert to fraction form
    280,748.71/387,433.38 = 153,424.31/x
  3. Step 3: Cross multiply
    280,748.71x = 387,433.38 × 153,424.31
  4. Step 4: Simplify right side
    280,748.71x = 59,441,697,635.64
  5. Step 5: Solve for x
    x = 59,441,697,635.64/280,748.71
  6. Step 6: Final answer
    x = 211,725.63

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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.