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Finding the Fourth Proportional to 291,711.40, 437,567.10 and 260,218.60

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Solution

The fourth proportional to 291,711.40, 437,567.10 and 260,218.60 is: 390,327.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,711.40 : 437,567.10 = 260,218.60 : x
  2. Step 2: Convert to fraction form
    291,711.40/437,567.10 = 260,218.60/x
  3. Step 3: Cross multiply
    291,711.40x = 437,567.10 × 260,218.60
  4. Step 4: Simplify right side
    291,711.40x = 113,863,098,168.06
  5. Step 5: Solve for x
    x = 113,863,098,168.06/291,711.40
  6. Step 6: Final answer
    x = 390,327.90

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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.