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Finding the Fourth Proportional to 542,143.46, 748,162.40 and 300,430.07

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Solution

The fourth proportional to 542,143.46, 748,162.40 and 300,430.07 is: 414,595.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    542,143.46 : 748,162.40 = 300,430.07 : x
  2. Step 2: Convert to fraction form
    542,143.46/748,162.40 = 300,430.07/x
  3. Step 3: Cross multiply
    542,143.46x = 748,162.40 × 300,430.07
  4. Step 4: Simplify right side
    542,143.46x = 224,770,482,203.37
  5. Step 5: Solve for x
    x = 224,770,482,203.37/542,143.46
  6. Step 6: Final answer
    x = 414,595.95

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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.