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Finding the Fourth Proportional to 297,617.68, 446,417.16 and 72,978.80

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Solution

The fourth proportional to 297,617.68, 446,417.16 and 72,978.80 is: 109,465.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    297,617.68 : 446,417.16 = 72,978.80 : x
  2. Step 2: Convert to fraction form
    297,617.68/446,417.16 = 72,978.80/x
  3. Step 3: Cross multiply
    297,617.68x = 446,417.16 × 72,978.80
  4. Step 4: Simplify right side
    297,617.68x = 32,578,988,636.21
  5. Step 5: Solve for x
    x = 32,578,988,636.21/297,617.68
  6. Step 6: Final answer
    x = 109,465.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.