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Finding the Fourth Proportional to 426,810.10, 640,025.61 and 227,088.40

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Solution

The fourth proportional to 426,810.10, 640,025.61 and 227,088.40 is: 340,531.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,810.10 : 640,025.61 = 227,088.40 : x
  2. Step 2: Convert to fraction form
    426,810.10/640,025.61 = 227,088.40/x
  3. Step 3: Cross multiply
    426,810.10x = 640,025.61 × 227,088.40
  4. Step 4: Simplify right side
    426,810.10x = 145,342,388,998.42
  5. Step 5: Solve for x
    x = 145,342,388,998.42/426,810.10
  6. Step 6: Final answer
    x = 340,531.75

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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.