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Finding the Fourth Proportional to 393,384.06, 590,060.76 and 112,901.28

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Solution

The fourth proportional to 393,384.06, 590,060.76 and 112,901.28 is: 169,347.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,384.06 : 590,060.76 = 112,901.28 : x
  2. Step 2: Convert to fraction form
    393,384.06/590,060.76 = 112,901.28/x
  3. Step 3: Cross multiply
    393,384.06x = 590,060.76 × 112,901.28
  4. Step 4: Simplify right side
    393,384.06x = 66,618,615,081.77
  5. Step 5: Solve for x
    x = 66,618,615,081.77/393,384.06
  6. Step 6: Final answer
    x = 169,347.52

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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.