Home / 266,916.18-400,436.55-77,380.50

Finding the Fourth Proportional to 266,916.18, 400,436.55 and 77,380.50

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Solution

The fourth proportional to 266,916.18, 400,436.55 and 77,380.50 is: 116,088.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,916.18 : 400,436.55 = 77,380.50 : x
  2. Step 2: Convert to fraction form
    266,916.18/400,436.55 = 77,380.50/x
  3. Step 3: Cross multiply
    266,916.18x = 400,436.55 × 77,380.50
  4. Step 4: Simplify right side
    266,916.18x = 30,985,980,457.28
  5. Step 5: Solve for x
    x = 30,985,980,457.28/266,916.18
  6. Step 6: Final answer
    x = 116,088.81

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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.