Home / 402,021.49-554,790.08-238,710.59

Finding the Fourth Proportional to 402,021.49, 554,790.08 and 238,710.59

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Solution

The fourth proportional to 402,021.49, 554,790.08 and 238,710.59 is: 329,420.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,021.49 : 554,790.08 = 238,710.59 : x
  2. Step 2: Convert to fraction form
    402,021.49/554,790.08 = 238,710.59/x
  3. Step 3: Cross multiply
    402,021.49x = 554,790.08 × 238,710.59
  4. Step 4: Simplify right side
    402,021.49x = 132,434,266,129.39
  5. Step 5: Solve for x
    x = 132,434,266,129.39/402,021.49
  6. Step 6: Final answer
    x = 329,420.86

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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.