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Finding the Fourth Proportional to 307,555.98, 424,427.31 and 173,419.98

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Solution

The fourth proportional to 307,555.98, 424,427.31 and 173,419.98 is: 239,319.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,555.98 : 424,427.31 = 173,419.98 : x
  2. Step 2: Convert to fraction form
    307,555.98/424,427.31 = 173,419.98/x
  3. Step 3: Cross multiply
    307,555.98x = 424,427.31 × 173,419.98
  4. Step 4: Simplify right side
    307,555.98x = 73,604,175,611.65
  5. Step 5: Solve for x
    x = 73,604,175,611.65/307,555.98
  6. Step 6: Final answer
    x = 239,319.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.