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Finding the Fourth Proportional to 499,075.04, 748,532.16 and 139,255.20

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Solution

The fourth proportional to 499,075.04, 748,532.16 and 139,255.20 is: 208,860.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,075.04 : 748,532.16 = 139,255.20 : x
  2. Step 2: Convert to fraction form
    499,075.04/748,532.16 = 139,255.20/x
  3. Step 3: Cross multiply
    499,075.04x = 748,532.16 × 139,255.20
  4. Step 4: Simplify right side
    499,075.04x = 104,236,995,647.23
  5. Step 5: Solve for x
    x = 104,236,995,647.23/499,075.04
  6. Step 6: Final answer
    x = 208,860.37

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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.