Home / 307,386.21-424,192.14-171,420.31

Finding the Fourth Proportional to 307,386.21, 424,192.14 and 171,420.31

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Solution

The fourth proportional to 307,386.21, 424,192.14 and 171,420.31 is: 236,559.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,386.21 : 424,192.14 = 171,420.31 : x
  2. Step 2: Convert to fraction form
    307,386.21/424,192.14 = 171,420.31/x
  3. Step 3: Cross multiply
    307,386.21x = 424,192.14 × 171,420.31
  4. Step 4: Simplify right side
    307,386.21x = 72,715,148,138.36
  5. Step 5: Solve for x
    x = 72,715,148,138.36/307,386.21
  6. Step 6: Final answer
    x = 236,559.57

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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.