Home / 402,112.48-554,921.01-220,840.72

Finding the Fourth Proportional to 402,112.48, 554,921.01 and 220,840.72

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Solution

The fourth proportional to 402,112.48, 554,921.01 and 220,840.72 is: 304,763.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,112.48 : 554,921.01 = 220,840.72 : x
  2. Step 2: Convert to fraction form
    402,112.48/554,921.01 = 220,840.72/x
  3. Step 3: Cross multiply
    402,112.48x = 554,921.01 × 220,840.72
  4. Step 4: Simplify right side
    402,112.48x = 122,549,155,391.53
  5. Step 5: Solve for x
    x = 122,549,155,391.53/402,112.48
  6. Step 6: Final answer
    x = 304,763.37

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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.