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Finding the Fourth Proportional to 286,665.60, 429,998.40 and 268,950.90

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Solution

The fourth proportional to 286,665.60, 429,998.40 and 268,950.90 is: 403,426.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,665.60 : 429,998.40 = 268,950.90 : x
  2. Step 2: Convert to fraction form
    286,665.60/429,998.40 = 268,950.90/x
  3. Step 3: Cross multiply
    286,665.60x = 429,998.40 × 268,950.90
  4. Step 4: Simplify right side
    286,665.60x = 115,648,456,678.56
  5. Step 5: Solve for x
    x = 115,648,456,678.56/286,665.60
  6. Step 6: Final answer
    x = 403,426.35

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1.5x scale

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.