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Finding the Fourth Proportional to 533,129.30, 735,719.90 and 318,264.74

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Solution

The fourth proportional to 533,129.30, 735,719.90 and 318,264.74 is: 439,206.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    533,129.30 : 735,719.90 = 318,264.74 : x
  2. Step 2: Convert to fraction form
    533,129.30/735,719.90 = 318,264.74/x
  3. Step 3: Cross multiply
    533,129.30x = 735,719.90 × 318,264.74
  4. Step 4: Simplify right side
    533,129.30x = 234,153,702,686.33
  5. Step 5: Solve for x
    x = 234,153,702,686.33/533,129.30
  6. Step 6: Final answer
    x = 439,206.22

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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.