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Finding the Fourth Proportional to 499,015.35, 748,570.17 and 139,210.11

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Solution

The fourth proportional to 499,015.35, 748,570.17 and 139,210.11 is: 208,828.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,015.35 : 748,570.17 = 139,210.11 : x
  2. Step 2: Convert to fraction form
    499,015.35/748,570.17 = 139,210.11/x
  3. Step 3: Cross multiply
    499,015.35x = 748,570.17 × 139,210.11
  4. Step 4: Simplify right side
    499,015.35x = 104,208,536,230.46
  5. Step 5: Solve for x
    x = 104,208,536,230.46/499,015.35
  6. Step 6: Final answer
    x = 208,828.32

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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.