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Finding the Fourth Proportional to 266,804.40, 399,222.45 and 243,184.80

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Solution

The fourth proportional to 266,804.40, 399,222.45 and 243,184.80 is: 363,880.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,804.40 : 399,222.45 = 243,184.80 : x
  2. Step 2: Convert to fraction form
    266,804.40/399,222.45 = 243,184.80/x
  3. Step 3: Cross multiply
    266,804.40x = 399,222.45 × 243,184.80
  4. Step 4: Simplify right side
    266,804.40x = 97,084,831,658.76
  5. Step 5: Solve for x
    x = 97,084,831,658.76/266,804.40
  6. Step 6: Final answer
    x = 363,880.17

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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.