Home / 399,285.03-551,262.05-254,172.72

Finding the Fourth Proportional to 399,285.03, 551,262.05 and 254,172.72

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Solution

The fourth proportional to 399,285.03, 551,262.05 and 254,172.72 is: 350,916.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,285.03 : 551,262.05 = 254,172.72 : x
  2. Step 2: Convert to fraction form
    399,285.03/551,262.05 = 254,172.72/x
  3. Step 3: Cross multiply
    399,285.03x = 551,262.05 × 254,172.72
  4. Step 4: Simplify right side
    399,285.03x = 140,115,774,681.28
  5. Step 5: Solve for x
    x = 140,115,774,681.28/399,285.03
  6. Step 6: Final answer
    x = 350,916.67

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.