Home / 328,721.49-492,882.66-128,802.35

Finding the Fourth Proportional to 328,721.49, 492,882.66 and 128,802.35

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Solution

The fourth proportional to 328,721.49, 492,882.66 and 128,802.35 is: 193,125.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,721.49 : 492,882.66 = 128,802.35 : x
  2. Step 2: Convert to fraction form
    328,721.49/492,882.66 = 128,802.35/x
  3. Step 3: Cross multiply
    328,721.49x = 492,882.66 × 128,802.35
  4. Step 4: Simplify right side
    328,721.49x = 63,484,442,417.84
  5. Step 5: Solve for x
    x = 63,484,442,417.84/328,721.49
  6. Step 6: Final answer
    x = 193,125.32

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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.