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Finding the Fourth Proportional to 373,356.20, 561,416.70 and 312,530.60

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Solution

The fourth proportional to 373,356.20, 561,416.70 and 312,530.60 is: 469,953.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    373,356.20 : 561,416.70 = 312,530.60 : x
  2. Step 2: Convert to fraction form
    373,356.20/561,416.70 = 312,530.60/x
  3. Step 3: Cross multiply
    373,356.20x = 561,416.70 × 312,530.60
  4. Step 4: Simplify right side
    373,356.20x = 175,459,898,101.02
  5. Step 5: Solve for x
    x = 175,459,898,101.02/373,356.20
  6. Step 6: Final answer
    x = 469,953.09

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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.