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Finding the Fourth Proportional to 438,793.64, 658,060.04 and 186,070.40

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Solution

The fourth proportional to 438,793.64, 658,060.04 and 186,070.40 is: 279,050.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,793.64 : 658,060.04 = 186,070.40 : x
  2. Step 2: Convert to fraction form
    438,793.64/658,060.04 = 186,070.40/x
  3. Step 3: Cross multiply
    438,793.64x = 658,060.04 × 186,070.40
  4. Step 4: Simplify right side
    438,793.64x = 122,445,494,866.82
  5. Step 5: Solve for x
    x = 122,445,494,866.82/438,793.64
  6. Step 6: Final answer
    x = 279,050.30

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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.