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Finding the Fourth Proportional to 499,544.58, 749,364.06 and 139,715.31

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Solution

The fourth proportional to 499,544.58, 749,364.06 and 139,715.31 is: 209,586.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,544.58 : 749,364.06 = 139,715.31 : x
  2. Step 2: Convert to fraction form
    499,544.58/749,364.06 = 139,715.31/x
  3. Step 3: Cross multiply
    499,544.58x = 749,364.06 × 139,715.31
  4. Step 4: Simplify right side
    499,544.58x = 104,697,631,945.76
  5. Step 5: Solve for x
    x = 104,697,631,945.76/499,544.58
  6. Step 6: Final answer
    x = 209,586.16

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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.