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Finding the Fourth Proportional to 607,931.80, 911,897.70 and 187,336.60

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Solution

The fourth proportional to 607,931.80, 911,897.70 and 187,336.60 is: 281,004.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    607,931.80 : 911,897.70 = 187,336.60 : x
  2. Step 2: Convert to fraction form
    607,931.80/911,897.70 = 187,336.60/x
  3. Step 3: Cross multiply
    607,931.80x = 911,897.70 × 187,336.60
  4. Step 4: Simplify right side
    607,931.80x = 170,831,814,665.82
  5. Step 5: Solve for x
    x = 170,831,814,665.82/607,931.80
  6. Step 6: Final answer
    x = 281,004.90

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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.