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Finding the Fourth Proportional to 540,042.80, 810,064.20 and 260,106.80

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Solution

The fourth proportional to 540,042.80, 810,064.20 and 260,106.80 is: 390,160.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    540,042.80 : 810,064.20 = 260,106.80 : x
  2. Step 2: Convert to fraction form
    540,042.80/810,064.20 = 260,106.80/x
  3. Step 3: Cross multiply
    540,042.80x = 810,064.20 × 260,106.80
  4. Step 4: Simplify right side
    540,042.80x = 210,703,206,856.56
  5. Step 5: Solve for x
    x = 210,703,206,856.56/540,042.80
  6. Step 6: Final answer
    x = 390,160.20

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Similar ratio
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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.