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Finding the Fourth Proportional to 402,803.34, 555,711.28 and 230,629.28

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Solution

The fourth proportional to 402,803.34, 555,711.28 and 230,629.28 is: 318,178.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,803.34 : 555,711.28 = 230,629.28 : x
  2. Step 2: Convert to fraction form
    402,803.34/555,711.28 = 230,629.28/x
  3. Step 3: Cross multiply
    402,803.34x = 555,711.28 × 230,629.28
  4. Step 4: Simplify right side
    402,803.34x = 128,163,292,394.28
  5. Step 5: Solve for x
    x = 128,163,292,394.28/402,803.34
  6. Step 6: Final answer
    x = 318,178.33

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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.