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Finding the Fourth Proportional to 402,340.96, 554,999.56 and 251,175.52

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Solution

The fourth proportional to 402,340.96, 554,999.56 and 251,175.52 is: 346,478.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,340.96 : 554,999.56 = 251,175.52 : x
  2. Step 2: Convert to fraction form
    402,340.96/554,999.56 = 251,175.52/x
  3. Step 3: Cross multiply
    402,340.96x = 554,999.56 × 251,175.52
  4. Step 4: Simplify right side
    402,340.96x = 139,402,303,082.77
  5. Step 5: Solve for x
    x = 139,402,303,082.77/402,340.96
  6. Step 6: Final answer
    x = 346,478.03

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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.