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Finding the Fourth Proportional to 306,051.70, 459,077.55 and 260,780.80

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Solution

The fourth proportional to 306,051.70, 459,077.55 and 260,780.80 is: 391,171.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,051.70 : 459,077.55 = 260,780.80 : x
  2. Step 2: Convert to fraction form
    306,051.70/459,077.55 = 260,780.80/x
  3. Step 3: Cross multiply
    306,051.70x = 459,077.55 × 260,780.80
  4. Step 4: Simplify right side
    306,051.70x = 119,718,610,751.04
  5. Step 5: Solve for x
    x = 119,718,610,751.04/306,051.70
  6. Step 6: Final answer
    x = 391,171.20

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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.