Home / 402,900.04-555,990.29-221,611.91

Finding the Fourth Proportional to 402,900.04, 555,990.29 and 221,611.91

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Solution

The fourth proportional to 402,900.04, 555,990.29 and 221,611.91 is: 305,817.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,900.04 : 555,990.29 = 221,611.91 : x
  2. Step 2: Convert to fraction form
    402,900.04/555,990.29 = 221,611.91/x
  3. Step 3: Cross multiply
    402,900.04x = 555,990.29 × 221,611.91
  4. Step 4: Simplify right side
    402,900.04x = 123,214,069,000.29
  5. Step 5: Solve for x
    x = 123,214,069,000.29/402,900.04
  6. Step 6: Final answer
    x = 305,817.97

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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.