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Finding the Fourth Proportional to 201,915.40, 302,613.90 and 154,935.40

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Solution

The fourth proportional to 201,915.40, 302,613.90 and 154,935.40 is: 232,204.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,915.40 : 302,613.90 = 154,935.40 : x
  2. Step 2: Convert to fraction form
    201,915.40/302,613.90 = 154,935.40/x
  3. Step 3: Cross multiply
    201,915.40x = 302,613.90 × 154,935.40
  4. Step 4: Simplify right side
    201,915.40x = 46,885,605,642.06
  5. Step 5: Solve for x
    x = 46,885,605,642.06/201,915.40
  6. Step 6: Final answer
    x = 232,204.21

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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.