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Finding the Fourth Proportional to 659,688.66, 989,530.56 and 238,866.12

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Solution

The fourth proportional to 659,688.66, 989,530.56 and 238,866.12 is: 358,298.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,688.66 : 989,530.56 = 238,866.12 : x
  2. Step 2: Convert to fraction form
    659,688.66/989,530.56 = 238,866.12/x
  3. Step 3: Cross multiply
    659,688.66x = 989,530.56 × 238,866.12
  4. Step 4: Simplify right side
    659,688.66x = 236,365,325,488.63
  5. Step 5: Solve for x
    x = 236,365,325,488.63/659,688.66
  6. Step 6: Final answer
    x = 358,298.30

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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.