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Finding the Fourth Proportional to 538,118.76, 742,637.61 and 296,401.26

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Solution

The fourth proportional to 538,118.76, 742,637.61 and 296,401.26 is: 409,052.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,118.76 : 742,637.61 = 296,401.26 : x
  2. Step 2: Convert to fraction form
    538,118.76/742,637.61 = 296,401.26/x
  3. Step 3: Cross multiply
    538,118.76x = 742,637.61 × 296,401.26
  4. Step 4: Simplify right side
    538,118.76x = 220,118,723,327.39
  5. Step 5: Solve for x
    x = 220,118,723,327.39/538,118.76
  6. Step 6: Final answer
    x = 409,052.31

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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.