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Finding the Fourth Proportional to 487,633.84, 731,741.46 and 217,741.12

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Solution

The fourth proportional to 487,633.84, 731,741.46 and 217,741.12 is: 326,741.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,633.84 : 731,741.46 = 217,741.12 : x
  2. Step 2: Convert to fraction form
    487,633.84/731,741.46 = 217,741.12/x
  3. Step 3: Cross multiply
    487,633.84x = 731,741.46 × 217,741.12
  4. Step 4: Simplify right side
    487,633.84x = 159,330,205,050.84
  5. Step 5: Solve for x
    x = 159,330,205,050.84/487,633.84
  6. Step 6: Final answer
    x = 326,741.49

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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.