Home / 639,741.59-959,613.62-166,426.19

Finding the Fourth Proportional to 639,741.59, 959,613.62 and 166,426.19

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Solution

The fourth proportional to 639,741.59, 959,613.62 and 166,426.19 is: 249,639.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,741.59 : 959,613.62 = 166,426.19 : x
  2. Step 2: Convert to fraction form
    639,741.59/959,613.62 = 166,426.19/x
  3. Step 3: Cross multiply
    639,741.59x = 959,613.62 × 166,426.19
  4. Step 4: Simplify right side
    639,741.59x = 159,704,833,018.51
  5. Step 5: Solve for x
    x = 159,704,833,018.51/639,741.59
  6. Step 6: Final answer
    x = 249,639.60

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Double scale
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Similar ratio
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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.