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Finding the Fourth Proportional to 243,663.36, 365,491.20 and 77,448.96

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Solution

The fourth proportional to 243,663.36, 365,491.20 and 77,448.96 is: 116,172.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,663.36 : 365,491.20 = 77,448.96 : x
  2. Step 2: Convert to fraction form
    243,663.36/365,491.20 = 77,448.96/x
  3. Step 3: Cross multiply
    243,663.36x = 365,491.20 × 77,448.96
  4. Step 4: Simplify right side
    243,663.36x = 28,306,913,329.15
  5. Step 5: Solve for x
    x = 28,306,913,329.15/243,663.36
  6. Step 6: Final answer
    x = 116,172.22

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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.