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Finding the Fourth Proportional to 659,636.51, 989,495.81 and 238,916.03

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Solution

The fourth proportional to 659,636.51, 989,495.81 and 238,916.03 is: 358,388.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,636.51 : 989,495.81 = 238,916.03 : x
  2. Step 2: Convert to fraction form
    659,636.51/989,495.81 = 238,916.03/x
  3. Step 3: Cross multiply
    659,636.51x = 989,495.81 × 238,916.03
  4. Step 4: Simplify right side
    659,636.51x = 236,406,409,432.25
  5. Step 5: Solve for x
    x = 236,406,409,432.25/659,636.51
  6. Step 6: Final answer
    x = 358,388.91

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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.