Home / 402,544.12-555,515.98-221,275.80

Finding the Fourth Proportional to 402,544.12, 555,515.98 and 221,275.80

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Solution

The fourth proportional to 402,544.12, 555,515.98 and 221,275.80 is: 305,363.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,544.12 : 555,515.98 = 221,275.80 : x
  2. Step 2: Convert to fraction form
    402,544.12/555,515.98 = 221,275.80/x
  3. Step 3: Cross multiply
    402,544.12x = 555,515.98 × 221,275.80
  4. Step 4: Simplify right side
    402,544.12x = 122,922,242,887.28
  5. Step 5: Solve for x
    x = 122,922,242,887.28/402,544.12
  6. Step 6: Final answer
    x = 305,363.40

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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.