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Finding the Fourth Proportional to 280,465.92, 387,100.80 and 159,615.36

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Solution

The fourth proportional to 280,465.92, 387,100.80 and 159,615.36 is: 220,302.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,465.92 : 387,100.80 = 159,615.36 : x
  2. Step 2: Convert to fraction form
    280,465.92/387,100.80 = 159,615.36/x
  3. Step 3: Cross multiply
    280,465.92x = 387,100.80 × 159,615.36
  4. Step 4: Simplify right side
    280,465.92x = 61,787,233,548.29
  5. Step 5: Solve for x
    x = 61,787,233,548.29/280,465.92
  6. Step 6: Final answer
    x = 220,302.11

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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.