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Finding the Fourth Proportional to 303,915.40, 455,873.10 and 93,617.80

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Solution

The fourth proportional to 303,915.40, 455,873.10 and 93,617.80 is: 140,426.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,915.40 : 455,873.10 = 93,617.80 : x
  2. Step 2: Convert to fraction form
    303,915.40/455,873.10 = 93,617.80/x
  3. Step 3: Cross multiply
    303,915.40x = 455,873.10 × 93,617.80
  4. Step 4: Simplify right side
    303,915.40x = 42,677,836,701.18
  5. Step 5: Solve for x
    x = 42,677,836,701.18/303,915.40
  6. Step 6: Final answer
    x = 140,426.70

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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.