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Finding the Fourth Proportional to 542,281.40, 748,393.11 and 300,639.77

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Solution

The fourth proportional to 542,281.40, 748,393.11 and 300,639.77 is: 414,907.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    542,281.40 : 748,393.11 = 300,639.77 : x
  2. Step 2: Convert to fraction form
    542,281.40/748,393.11 = 300,639.77/x
  3. Step 3: Cross multiply
    542,281.40x = 748,393.11 × 300,639.77
  4. Step 4: Simplify right side
    542,281.40x = 224,996,728,718.02
  5. Step 5: Solve for x
    x = 224,996,728,718.02/542,281.40
  6. Step 6: Final answer
    x = 414,907.70

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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.