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Finding the Fourth Proportional to 434,071.20, 650,888.10 and 256,632.60

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Solution

The fourth proportional to 434,071.20, 650,888.10 and 256,632.60 is: 384,819.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    434,071.20 : 650,888.10 = 256,632.60 : x
  2. Step 2: Convert to fraction form
    434,071.20/650,888.10 = 256,632.60/x
  3. Step 3: Cross multiply
    434,071.20x = 650,888.10 × 256,632.60
  4. Step 4: Simplify right side
    434,071.20x = 167,039,105,412.06
  5. Step 5: Solve for x
    x = 167,039,105,412.06/434,071.20
  6. Step 6: Final answer
    x = 384,819.60

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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.