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Finding the Fourth Proportional to 272,448.60, 408,672.90 and 260,201.40

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Solution

The fourth proportional to 272,448.60, 408,672.90 and 260,201.40 is: 390,302.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,448.60 : 408,672.90 = 260,201.40 : x
  2. Step 2: Convert to fraction form
    272,448.60/408,672.90 = 260,201.40/x
  3. Step 3: Cross multiply
    272,448.60x = 408,672.90 × 260,201.40
  4. Step 4: Simplify right side
    272,448.60x = 106,337,260,722.06
  5. Step 5: Solve for x
    x = 106,337,260,722.06/272,448.60
  6. Step 6: Final answer
    x = 390,302.10

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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.