Home / 406,138.32-609,075.72-139,833.36

Finding the Fourth Proportional to 406,138.32, 609,075.72 and 139,833.36

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Solution

The fourth proportional to 406,138.32, 609,075.72 and 139,833.36 is: 209,704.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    406,138.32 : 609,075.72 = 139,833.36 : x
  2. Step 2: Convert to fraction form
    406,138.32/609,075.72 = 139,833.36/x
  3. Step 3: Cross multiply
    406,138.32x = 609,075.72 × 139,833.36
  4. Step 4: Simplify right side
    406,138.32x = 85,169,104,422.02
  5. Step 5: Solve for x
    x = 85,169,104,422.02/406,138.32
  6. Step 6: Final answer
    x = 209,704.68

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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.