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Finding the Fourth Proportional to 402,184.94, 555,021.90 and 220,913.64

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Solution

The fourth proportional to 402,184.94, 555,021.90 and 220,913.64 is: 304,864.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,184.94 : 555,021.90 = 220,913.64 : x
  2. Step 2: Convert to fraction form
    402,184.94/555,021.90 = 220,913.64/x
  3. Step 3: Cross multiply
    402,184.94x = 555,021.90 × 220,913.64
  4. Step 4: Simplify right side
    402,184.94x = 122,611,908,208.72
  5. Step 5: Solve for x
    x = 122,611,908,208.72/402,184.94
  6. Step 6: Final answer
    x = 304,864.50

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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.