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Finding the Fourth Proportional to 280,392.32, 386,907.36 and 159,548.96

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Solution

The fourth proportional to 280,392.32, 386,907.36 and 159,548.96 is: 220,158.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,392.32 : 386,907.36 = 159,548.96 : x
  2. Step 2: Convert to fraction form
    280,392.32/386,907.36 = 159,548.96/x
  3. Step 3: Cross multiply
    280,392.32x = 386,907.36 × 159,548.96
  4. Step 4: Simplify right side
    280,392.32x = 61,730,666,904.35
  5. Step 5: Solve for x
    x = 61,730,666,904.35/280,392.32
  6. Step 6: Final answer
    x = 220,158.19

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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.