Home / 420,968.96-631,702.62-154,916.36

Finding the Fourth Proportional to 420,968.96, 631,702.62 and 154,916.36

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Solution

The fourth proportional to 420,968.96, 631,702.62 and 154,916.36 is: 232,466.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,968.96 : 631,702.62 = 154,916.36 : x
  2. Step 2: Convert to fraction form
    420,968.96/631,702.62 = 154,916.36/x
  3. Step 3: Cross multiply
    420,968.96x = 631,702.62 × 154,916.36
  4. Step 4: Simplify right side
    420,968.96x = 97,861,070,492.86
  5. Step 5: Solve for x
    x = 97,861,070,492.86/420,968.96
  6. Step 6: Final answer
    x = 232,466.24

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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.