Home / 402,330.05-555,219.23-221,045.74

Finding the Fourth Proportional to 402,330.05, 555,219.23 and 221,045.74

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Solution

The fourth proportional to 402,330.05, 555,219.23 and 221,045.74 is: 305,045.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,330.05 : 555,219.23 = 221,045.74 : x
  2. Step 2: Convert to fraction form
    402,330.05/555,219.23 = 221,045.74/x
  3. Step 3: Cross multiply
    402,330.05x = 555,219.23 × 221,045.74
  4. Step 4: Simplify right side
    402,330.05x = 122,728,843,064.30
  5. Step 5: Solve for x
    x = 122,728,843,064.30/402,330.05
  6. Step 6: Final answer
    x = 305,045.18

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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.