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Finding the Fourth Proportional to 556,898.18, 835,213.32 and 257,090.90

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Solution

The fourth proportional to 556,898.18, 835,213.32 and 257,090.90 is: 385,574.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    556,898.18 : 835,213.32 = 257,090.90 : x
  2. Step 2: Convert to fraction form
    556,898.18/835,213.32 = 257,090.90/x
  3. Step 3: Cross multiply
    556,898.18x = 835,213.32 × 257,090.90
  4. Step 4: Simplify right side
    556,898.18x = 214,725,739,954.72
  5. Step 5: Solve for x
    x = 214,725,739,954.72/556,898.18
  6. Step 6: Final answer
    x = 385,574.51

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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.