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Finding the Fourth Proportional to 486,730.08, 671,643.72 and 271,840.32

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Solution

The fourth proportional to 486,730.08, 671,643.72 and 271,840.32 is: 375,115.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,730.08 : 671,643.72 = 271,840.32 : x
  2. Step 2: Convert to fraction form
    486,730.08/671,643.72 = 271,840.32/x
  3. Step 3: Cross multiply
    486,730.08x = 671,643.72 × 271,840.32
  4. Step 4: Simplify right side
    486,730.08x = 182,579,843,770.79
  5. Step 5: Solve for x
    x = 182,579,843,770.79/486,730.08
  6. Step 6: Final answer
    x = 375,115.18

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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.