Home / 307,721.13-424,643.76-193,061.45

Finding the Fourth Proportional to 307,721.13, 424,643.76 and 193,061.45

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Solution

The fourth proportional to 307,721.13, 424,643.76 and 193,061.45 is: 266,417.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,721.13 : 424,643.76 = 193,061.45 : x
  2. Step 2: Convert to fraction form
    307,721.13/424,643.76 = 193,061.45/x
  3. Step 3: Cross multiply
    307,721.13x = 424,643.76 × 193,061.45
  4. Step 4: Simplify right side
    307,721.13x = 81,982,337,915.83
  5. Step 5: Solve for x
    x = 81,982,337,915.83/307,721.13
  6. Step 6: Final answer
    x = 266,417.64

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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.