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Finding the Fourth Proportional to 342,998.04, 514,497.06 and 143,209.65

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Solution

The fourth proportional to 342,998.04, 514,497.06 and 143,209.65 is: 214,814.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,998.04 : 514,497.06 = 143,209.65 : x
  2. Step 2: Convert to fraction form
    342,998.04/514,497.06 = 143,209.65/x
  3. Step 3: Cross multiply
    342,998.04x = 514,497.06 × 143,209.65
  4. Step 4: Simplify right side
    342,998.04x = 73,680,943,888.63
  5. Step 5: Solve for x
    x = 73,680,943,888.63/342,998.04
  6. Step 6: Final answer
    x = 214,814.48

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Double scale
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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.