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Finding the Fourth Proportional to 191,531.40, 287,297.10 and 49,376.40

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Solution

The fourth proportional to 191,531.40, 287,297.10 and 49,376.40 is: 74,064.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,531.40 : 287,297.10 = 49,376.40 : x
  2. Step 2: Convert to fraction form
    191,531.40/287,297.10 = 49,376.40/x
  3. Step 3: Cross multiply
    191,531.40x = 287,297.10 × 49,376.40
  4. Step 4: Simplify right side
    191,531.40x = 14,185,696,528.44
  5. Step 5: Solve for x
    x = 14,185,696,528.44/191,531.40
  6. Step 6: Final answer
    x = 74,064.60

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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.