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Finding the Fourth Proportional to 280,924.75, 387,676.29 and 153,601.39

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Solution

The fourth proportional to 280,924.75, 387,676.29 and 153,601.39 is: 211,969.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,924.75 : 387,676.29 = 153,601.39 : x
  2. Step 2: Convert to fraction form
    280,924.75/387,676.29 = 153,601.39/x
  3. Step 3: Cross multiply
    280,924.75x = 387,676.29 × 153,601.39
  4. Step 4: Simplify right side
    280,924.75x = 59,547,617,014.04
  5. Step 5: Solve for x
    x = 59,547,617,014.04/280,924.75
  6. Step 6: Final answer
    x = 211,969.99

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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.