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Finding the Fourth Proportional to 243,879.98, 365,936.58 and 86,182.70

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Solution

The fourth proportional to 243,879.98, 365,936.58 and 86,182.70 is: 129,315.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,879.98 : 365,936.58 = 86,182.70 : x
  2. Step 2: Convert to fraction form
    243,879.98/365,936.58 = 86,182.70/x
  3. Step 3: Cross multiply
    243,879.98x = 365,936.58 × 86,182.70
  4. Step 4: Simplify right side
    243,879.98x = 31,537,402,493.17
  5. Step 5: Solve for x
    x = 31,537,402,493.17/243,879.98
  6. Step 6: Final answer
    x = 129,315.26

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1.5x scale

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.