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Finding the Fourth Proportional to 435,480.60, 653,220.90 and 186,187.80

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Solution

The fourth proportional to 435,480.60, 653,220.90 and 186,187.80 is: 279,281.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    435,480.60 : 653,220.90 = 186,187.80 : x
  2. Step 2: Convert to fraction form
    435,480.60/653,220.90 = 186,187.80/x
  3. Step 3: Cross multiply
    435,480.60x = 653,220.90 × 186,187.80
  4. Step 4: Simplify right side
    435,480.60x = 121,621,762,285.02
  5. Step 5: Solve for x
    x = 121,621,762,285.02/435,480.60
  6. Step 6: Final answer
    x = 279,281.70

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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.