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Finding the Fourth Proportional to 402,798.34, 555,704.39 and 230,624.29

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Solution

The fourth proportional to 402,798.34, 555,704.39 and 230,624.29 is: 318,171.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,798.34 : 555,704.39 = 230,624.29 : x
  2. Step 2: Convert to fraction form
    402,798.34/555,704.39 = 230,624.29/x
  3. Step 3: Cross multiply
    402,798.34x = 555,704.39 × 230,624.29
  4. Step 4: Simplify right side
    402,798.34x = 128,158,930,393.63
  5. Step 5: Solve for x
    x = 128,158,930,393.63/402,798.34
  6. Step 6: Final answer
    x = 318,171.45

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1.5x scale

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.