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Finding the Fourth Proportional to 658,171,305.64, 986,969,944.75 and 248,940,478

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Solution

The fourth proportional to 658,171,305.64, 986,969,944.75 and 248,940,478 is: 373,302,159.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,171,305.64 : 986,969,944.75 = 248,940,478 : x
  2. Step 2: Convert to fraction form
    658,171,305.64/986,969,944.75 = 248,940,478/x
  3. Step 3: Cross multiply
    658,171,305.64x = 986,969,944.75 × 248,940,478
  4. Step 4: Simplify right side
    658,171,305.64x = 245,696,769,817,698,592
  5. Step 5: Solve for x
    x = 245,696,769,817,698,592/658,171,305.64
  6. Step 6: Final answer
    x = 373,302,159.65

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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.