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Finding the Fourth Proportional to 485,235.39, 669,615.80 and 270,370.83

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Solution

The fourth proportional to 485,235.39, 669,615.80 and 270,370.83 is: 373,106.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,235.39 : 669,615.80 = 270,370.83 : x
  2. Step 2: Convert to fraction form
    485,235.39/669,615.80 = 270,370.83/x
  3. Step 3: Cross multiply
    485,235.39x = 669,615.80 × 270,370.83
  4. Step 4: Simplify right side
    485,235.39x = 181,044,578,275.26
  5. Step 5: Solve for x
    x = 181,044,578,275.26/485,235.39
  6. Step 6: Final answer
    x = 373,106.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.