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Finding the Fourth Proportional to 445,482.82, 668,156.31 and 145,994.50

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Solution

The fourth proportional to 445,482.82, 668,156.31 and 145,994.50 is: 218,969.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,482.82 : 668,156.31 = 145,994.50 : x
  2. Step 2: Convert to fraction form
    445,482.82/668,156.31 = 145,994.50/x
  3. Step 3: Cross multiply
    445,482.82x = 668,156.31 × 145,994.50
  4. Step 4: Simplify right side
    445,482.82x = 97,547,146,400.30
  5. Step 5: Solve for x
    x = 97,547,146,400.30/445,482.82
  6. Step 6: Final answer
    x = 218,969.49

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.