Home / 284,728.12-392,890.62-157,386.28

Finding the Fourth Proportional to 284,728.12, 392,890.62 and 157,386.28

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Solution

The fourth proportional to 284,728.12, 392,890.62 and 157,386.28 is: 217,174.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    284,728.12 : 392,890.62 = 157,386.28 : x
  2. Step 2: Convert to fraction form
    284,728.12/392,890.62 = 157,386.28/x
  3. Step 3: Cross multiply
    284,728.12x = 392,890.62 × 157,386.28
  4. Step 4: Simplify right side
    284,728.12x = 61,835,593,128.69
  5. Step 5: Solve for x
    x = 61,835,593,128.69/284,728.12
  6. Step 6: Final answer
    x = 217,174.17

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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.