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Finding the Fourth Proportional to 402,703.60, 604,055.40 and 269,993.20

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Solution

The fourth proportional to 402,703.60, 604,055.40 and 269,993.20 is: 404,989.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,703.60 : 604,055.40 = 269,993.20 : x
  2. Step 2: Convert to fraction form
    402,703.60/604,055.40 = 269,993.20/x
  3. Step 3: Cross multiply
    402,703.60x = 604,055.40 × 269,993.20
  4. Step 4: Simplify right side
    402,703.60x = 163,090,850,423.28
  5. Step 5: Solve for x
    x = 163,090,850,423.28/402,703.60
  6. Step 6: Final answer
    x = 404,989.80

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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.