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Finding the Fourth Proportional to 402,814.41, 555,872.72 and 221,526.29

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Solution

The fourth proportional to 402,814.41, 555,872.72 and 221,526.29 is: 305,700.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,814.41 : 555,872.72 = 221,526.29 : x
  2. Step 2: Convert to fraction form
    402,814.41/555,872.72 = 221,526.29/x
  3. Step 3: Cross multiply
    402,814.41x = 555,872.72 × 221,526.29
  4. Step 4: Simplify right side
    402,814.41x = 123,140,417,486.81
  5. Step 5: Solve for x
    x = 123,140,417,486.81/402,814.41
  6. Step 6: Final answer
    x = 305,700.13

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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.