Home / 284,721.60-392,900.40-157,389

Finding the Fourth Proportional to 284,721.60, 392,900.40 and 157,389

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Solution

The fourth proportional to 284,721.60, 392,900.40 and 157,389 is: 217,188.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    284,721.60 : 392,900.40 = 157,389 : x
  2. Step 2: Convert to fraction form
    284,721.60/392,900.40 = 157,389/x
  3. Step 3: Cross multiply
    284,721.60x = 392,900.40 × 157,389
  4. Step 4: Simplify right side
    284,721.60x = 61,838,201,055.60
  5. Step 5: Solve for x
    x = 61,838,201,055.60/284,721.60
  6. Step 6: Final answer
    x = 217,188.30

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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.