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Finding the Fourth Proportional to 499,543.08, 749,361.80 and 139,713.81

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Solution

The fourth proportional to 499,543.08, 749,361.80 and 139,713.81 is: 209,583.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,543.08 : 749,361.80 = 139,713.81 : x
  2. Step 2: Convert to fraction form
    499,543.08/749,361.80 = 139,713.81/x
  3. Step 3: Cross multiply
    499,543.08x = 749,361.80 × 139,713.81
  4. Step 4: Simplify right side
    499,543.08x = 104,696,192,495.74
  5. Step 5: Solve for x
    x = 104,696,192,495.74/499,543.08
  6. Step 6: Final answer
    x = 209,583.91

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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.