Home / 429,069.90-643,355.62-162,685.10

Finding the Fourth Proportional to 429,069.90, 643,355.62 and 162,685.10

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Solution

The fourth proportional to 429,069.90, 643,355.62 and 162,685.10 is: 243,933.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,069.90 : 643,355.62 = 162,685.10 : x
  2. Step 2: Convert to fraction form
    429,069.90/643,355.62 = 162,685.10/x
  3. Step 3: Cross multiply
    429,069.90x = 643,355.62 × 162,685.10
  4. Step 4: Simplify right side
    429,069.90x = 104,664,369,345.06
  5. Step 5: Solve for x
    x = 104,664,369,345.06/429,069.90
  6. Step 6: Final answer
    x = 243,933.14

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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.