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Finding the Fourth Proportional to 292,407.60, 438,611.40 and 187,431.60

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Solution

The fourth proportional to 292,407.60, 438,611.40 and 187,431.60 is: 281,147.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,407.60 : 438,611.40 = 187,431.60 : x
  2. Step 2: Convert to fraction form
    292,407.60/438,611.40 = 187,431.60/x
  3. Step 3: Cross multiply
    292,407.60x = 438,611.40 × 187,431.60
  4. Step 4: Simplify right side
    292,407.60x = 82,209,636,480.24
  5. Step 5: Solve for x
    x = 82,209,636,480.24/292,407.60
  6. Step 6: Final answer
    x = 281,147.40

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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.