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Finding the Fourth Proportional to 306,039.20, 459,058.80 and 260,768.30

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Solution

The fourth proportional to 306,039.20, 459,058.80 and 260,768.30 is: 391,152.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,039.20 : 459,058.80 = 260,768.30 : x
  2. Step 2: Convert to fraction form
    306,039.20/459,058.80 = 260,768.30/x
  3. Step 3: Cross multiply
    306,039.20x = 459,058.80 × 260,768.30
  4. Step 4: Simplify right side
    306,039.20x = 119,707,982,876.04
  5. Step 5: Solve for x
    x = 119,707,982,876.04/306,039.20
  6. Step 6: Final answer
    x = 391,152.45

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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.