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Finding the Fourth Proportional to 280,676.72, 387,334.24 and 159,818.06

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Solution

The fourth proportional to 280,676.72, 387,334.24 and 159,818.06 is: 220,549.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,676.72 : 387,334.24 = 159,818.06 : x
  2. Step 2: Convert to fraction form
    280,676.72/387,334.24 = 159,818.06/x
  3. Step 3: Cross multiply
    280,676.72x = 387,334.24 × 159,818.06
  4. Step 4: Simplify right side
    280,676.72x = 61,903,006,808.37
  5. Step 5: Solve for x
    x = 61,903,006,808.37/280,676.72
  6. Step 6: Final answer
    x = 220,549.13

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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.