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Finding the Fourth Proportional to 657,784.59, 986,676.93 and 159,148.59

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Solution

The fourth proportional to 657,784.59, 986,676.93 and 159,148.59 is: 238,722.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,784.59 : 986,676.93 = 159,148.59 : x
  2. Step 2: Convert to fraction form
    657,784.59/986,676.93 = 159,148.59/x
  3. Step 3: Cross multiply
    657,784.59x = 986,676.93 × 159,148.59
  4. Step 4: Simplify right side
    657,784.59x = 157,028,245,895.07
  5. Step 5: Solve for x
    x = 157,028,245,895.07/657,784.59
  6. Step 6: Final answer
    x = 238,722.90

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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.