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Finding the Fourth Proportional to 402,325.53, 555,213.01 and 221,041.23

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Solution

The fourth proportional to 402,325.53, 555,213.01 and 221,041.23 is: 305,038.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,325.53 : 555,213.01 = 221,041.23 : x
  2. Step 2: Convert to fraction form
    402,325.53/555,213.01 = 221,041.23/x
  3. Step 3: Cross multiply
    402,325.53x = 555,213.01 × 221,041.23
  4. Step 4: Simplify right side
    402,325.53x = 122,724,965,362.06
  5. Step 5: Solve for x
    x = 122,724,965,362.06/402,325.53
  6. Step 6: Final answer
    x = 305,038.97

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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.