Home / 402,460.37-555,397.95-221,187.23

Finding the Fourth Proportional to 402,460.37, 555,397.95 and 221,187.23

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Solution

The fourth proportional to 402,460.37, 555,397.95 and 221,187.23 is: 305,239.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,460.37 : 555,397.95 = 221,187.23 : x
  2. Step 2: Convert to fraction form
    402,460.37/555,397.95 = 221,187.23/x
  3. Step 3: Cross multiply
    402,460.37x = 555,397.95 × 221,187.23
  4. Step 4: Simplify right side
    402,460.37x = 122,846,934,108.18
  5. Step 5: Solve for x
    x = 122,846,934,108.18/402,460.37
  6. Step 6: Final answer
    x = 305,239.83

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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.