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Finding the Fourth Proportional to 386,700.17, 580,050.30 and 120,482.15

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Solution

The fourth proportional to 386,700.17, 580,050.30 and 120,482.15 is: 180,723.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,700.17 : 580,050.30 = 120,482.15 : x
  2. Step 2: Convert to fraction form
    386,700.17/580,050.30 = 120,482.15/x
  3. Step 3: Cross multiply
    386,700.17x = 580,050.30 × 120,482.15
  4. Step 4: Simplify right side
    386,700.17x = 69,885,707,252.15
  5. Step 5: Solve for x
    x = 69,885,707,252.15/386,700.17
  6. Step 6: Final answer
    x = 180,723.24

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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.