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Finding the Fourth Proportional to 542,320.76, 748,393.60 and 297,303.88

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Solution

The fourth proportional to 542,320.76, 748,393.60 and 297,303.88 is: 410,274.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    542,320.76 : 748,393.60 = 297,303.88 : x
  2. Step 2: Convert to fraction form
    542,320.76/748,393.60 = 297,303.88/x
  3. Step 3: Cross multiply
    542,320.76x = 748,393.60 × 297,303.88
  4. Step 4: Simplify right side
    542,320.76x = 222,500,321,047.17
  5. Step 5: Solve for x
    x = 222,500,321,047.17/542,320.76
  6. Step 6: Final answer
    x = 410,274.39

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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.