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Finding the Fourth Proportional to 542,348.56, 813,569.82 and 142,986.16

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Solution

The fourth proportional to 542,348.56, 813,569.82 and 142,986.16 is: 214,491.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    542,348.56 : 813,569.82 = 142,986.16 : x
  2. Step 2: Convert to fraction form
    542,348.56/813,569.82 = 142,986.16/x
  3. Step 3: Cross multiply
    542,348.56x = 813,569.82 × 142,986.16
  4. Step 4: Simplify right side
    542,348.56x = 116,329,224,453.69
  5. Step 5: Solve for x
    x = 116,329,224,453.69/542,348.56
  6. Step 6: Final answer
    x = 214,491.63

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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.