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Finding the Fourth Proportional to 550,156.80, 759,215.76 and 308,439.42

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Solution

The fourth proportional to 550,156.80, 759,215.76 and 308,439.42 is: 425,646.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    550,156.80 : 759,215.76 = 308,439.42 : x
  2. Step 2: Convert to fraction form
    550,156.80/759,215.76 = 308,439.42/x
  3. Step 3: Cross multiply
    550,156.80x = 759,215.76 × 308,439.42
  4. Step 4: Simplify right side
    550,156.80x = 234,172,068,669.26
  5. Step 5: Solve for x
    x = 234,172,068,669.26/550,156.80
  6. Step 6: Final answer
    x = 425,646.05

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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.