Home / 256,635,703-384,799,821.16-81,683,165.53

Finding the Fourth Proportional to 256,635,703, 384,799,821.16 and 81,683,165.53

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Solution

The fourth proportional to 256,635,703, 384,799,821.16 and 81,683,165.53 is: 122,475,817.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,635,703 : 384,799,821.16 = 81,683,165.53 : x
  2. Step 2: Convert to fraction form
    256,635,703/384,799,821.16 = 81,683,165.53/x
  3. Step 3: Cross multiply
    256,635,703x = 384,799,821.16 × 81,683,165.53
  4. Step 4: Simplify right side
    256,635,703x = 31,431,667,487,726,680
  5. Step 5: Solve for x
    x = 31,431,667,487,726,680/256,635,703
  6. Step 6: Final answer
    x = 122,475,817.36

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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.