Home / 402,496.48-555,442.32-221,210.08

Finding the Fourth Proportional to 402,496.48, 555,442.32 and 221,210.08

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Solution

The fourth proportional to 402,496.48, 555,442.32 and 221,210.08 is: 305,268.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,496.48 : 555,442.32 = 221,210.08 : x
  2. Step 2: Convert to fraction form
    402,496.48/555,442.32 = 221,210.08/x
  3. Step 3: Cross multiply
    402,496.48x = 555,442.32 × 221,210.08
  4. Step 4: Simplify right side
    402,496.48x = 122,869,440,042.59
  5. Step 5: Solve for x
    x = 122,869,440,042.59/402,496.48
  6. Step 6: Final answer
    x = 305,268.36

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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.