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Finding the Fourth Proportional to 541,639.68, 747,339.12 and 348,148.50

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Solution

The fourth proportional to 541,639.68, 747,339.12 and 348,148.50 is: 480,365.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    541,639.68 : 747,339.12 = 348,148.50 : x
  2. Step 2: Convert to fraction form
    541,639.68/747,339.12 = 348,148.50/x
  3. Step 3: Cross multiply
    541,639.68x = 747,339.12 × 348,148.50
  4. Step 4: Simplify right side
    541,639.68x = 260,184,993,619.32
  5. Step 5: Solve for x
    x = 260,184,993,619.32/541,639.68
  6. Step 6: Final answer
    x = 480,365.46

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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.