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Finding the Fourth Proportional to 402,594.30, 555,587.04 and 221,313.87

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Solution

The fourth proportional to 402,594.30, 555,587.04 and 221,313.87 is: 305,416.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,594.30 : 555,587.04 = 221,313.87 : x
  2. Step 2: Convert to fraction form
    402,594.30/555,587.04 = 221,313.87/x
  3. Step 3: Cross multiply
    402,594.30x = 555,587.04 × 221,313.87
  4. Step 4: Simplify right side
    402,594.30x = 122,959,117,944.25
  5. Step 5: Solve for x
    x = 122,959,117,944.25/402,594.30
  6. Step 6: Final answer
    x = 305,416.94

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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.