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Finding the Fourth Proportional to 666,097.18, 919,213.46 and 360,172.83

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Solution

The fourth proportional to 666,097.18, 919,213.46 and 360,172.83 is: 497,038.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,097.18 : 919,213.46 = 360,172.83 : x
  2. Step 2: Convert to fraction form
    666,097.18/919,213.46 = 360,172.83/x
  3. Step 3: Cross multiply
    666,097.18x = 919,213.46 × 360,172.83
  4. Step 4: Simplify right side
    666,097.18x = 331,075,711,461.43
  5. Step 5: Solve for x
    x = 331,075,711,461.43/666,097.18
  6. Step 6: Final answer
    x = 497,038.15

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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.