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Finding the Fourth Proportional to 291,666.60, 437,499.90 and 220,807.80

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Solution

The fourth proportional to 291,666.60, 437,499.90 and 220,807.80 is: 331,211.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,666.60 : 437,499.90 = 220,807.80 : x
  2. Step 2: Convert to fraction form
    291,666.60/437,499.90 = 220,807.80/x
  3. Step 3: Cross multiply
    291,666.60x = 437,499.90 × 220,807.80
  4. Step 4: Simplify right side
    291,666.60x = 96,603,390,419.22
  5. Step 5: Solve for x
    x = 96,603,390,419.22/291,666.60
  6. Step 6: Final answer
    x = 331,211.70

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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.