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Finding the Fourth Proportional to 648,136.60, 972,204.90 and 174,869.80

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Solution

The fourth proportional to 648,136.60, 972,204.90 and 174,869.80 is: 262,304.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,136.60 : 972,204.90 = 174,869.80 : x
  2. Step 2: Convert to fraction form
    648,136.60/972,204.90 = 174,869.80/x
  3. Step 3: Cross multiply
    648,136.60x = 972,204.90 × 174,869.80
  4. Step 4: Simplify right side
    648,136.60x = 170,009,276,422.02
  5. Step 5: Solve for x
    x = 170,009,276,422.02/648,136.60
  6. Step 6: Final answer
    x = 262,304.70

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1.5x scale

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.