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Finding the Fourth Proportional to 402,522.66, 555,482.43 and 221,253.16

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Solution

The fourth proportional to 402,522.66, 555,482.43 and 221,253.16 is: 305,330.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,522.66 : 555,482.43 = 221,253.16 : x
  2. Step 2: Convert to fraction form
    402,522.66/555,482.43 = 221,253.16/x
  3. Step 3: Cross multiply
    402,522.66x = 555,482.43 × 221,253.16
  4. Step 4: Simplify right side
    402,522.66x = 122,902,242,961.98
  5. Step 5: Solve for x
    x = 122,902,242,961.98/402,522.66
  6. Step 6: Final answer
    x = 305,330.00

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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.