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Finding the Fourth Proportional to 402,229.20, 603,343.80 and 260,511.60

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Solution

The fourth proportional to 402,229.20, 603,343.80 and 260,511.60 is: 390,767.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,229.20 : 603,343.80 = 260,511.60 : x
  2. Step 2: Convert to fraction form
    402,229.20/603,343.80 = 260,511.60/x
  3. Step 3: Cross multiply
    402,229.20x = 603,343.80 × 260,511.60
  4. Step 4: Simplify right side
    402,229.20x = 157,178,058,688.08
  5. Step 5: Solve for x
    x = 157,178,058,688.08/402,229.20
  6. Step 6: Final answer
    x = 390,767.40

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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.