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Finding the Fourth Proportional to 447,880.78, 671,915.94 and 148,344.40

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Solution

The fourth proportional to 447,880.78, 671,915.94 and 148,344.40 is: 222,547.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,880.78 : 671,915.94 = 148,344.40 : x
  2. Step 2: Convert to fraction form
    447,880.78/671,915.94 = 148,344.40/x
  3. Step 3: Cross multiply
    447,880.78x = 671,915.94 × 148,344.40
  4. Step 4: Simplify right side
    447,880.78x = 99,674,966,969.74
  5. Step 5: Solve for x
    x = 99,674,966,969.74/447,880.78
  6. Step 6: Final answer
    x = 222,547.99

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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.