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Finding the Fourth Proportional to 171,637.80, 257,456.70 and 164,639.40

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Solution

The fourth proportional to 171,637.80, 257,456.70 and 164,639.40 is: 246,959.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,637.80 : 257,456.70 = 164,639.40 : x
  2. Step 2: Convert to fraction form
    171,637.80/257,456.70 = 164,639.40/x
  3. Step 3: Cross multiply
    171,637.80x = 257,456.70 × 164,639.40
  4. Step 4: Simplify right side
    171,637.80x = 42,387,516,613.98
  5. Step 5: Solve for x
    x = 42,387,516,613.98/171,637.80
  6. Step 6: Final answer
    x = 246,959.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.