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Finding the Fourth Proportional to 348,358, 480,737.88 and 189,382

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Solution

The fourth proportional to 348,358, 480,737.88 and 189,382 is: 261,349.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    348,358 : 480,737.88 = 189,382 : x
  2. Step 2: Convert to fraction form
    348,358/480,737.88 = 189,382/x
  3. Step 3: Cross multiply
    348,358x = 480,737.88 × 189,382
  4. Step 4: Simplify right side
    348,358x = 91,043,101,190.16
  5. Step 5: Solve for x
    x = 91,043,101,190.16/348,358
  6. Step 6: Final answer
    x = 261,349.25

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.