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Finding the Fourth Proportional to 472,655.70, 708,983.55 and 140,231.70

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Solution

The fourth proportional to 472,655.70, 708,983.55 and 140,231.70 is: 210,347.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,655.70 : 708,983.55 = 140,231.70 : x
  2. Step 2: Convert to fraction form
    472,655.70/708,983.55 = 140,231.70/x
  3. Step 3: Cross multiply
    472,655.70x = 708,983.55 × 140,231.70
  4. Step 4: Simplify right side
    472,655.70x = 99,421,968,488.54
  5. Step 5: Solve for x
    x = 99,421,968,488.54/472,655.70
  6. Step 6: Final answer
    x = 210,347.55

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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.