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Finding the Fourth Proportional to 386,249.40, 580,030.20 and 286,522.20

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Solution

The fourth proportional to 386,249.40, 580,030.20 and 286,522.20 is: 430,270.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,249.40 : 580,030.20 = 286,522.20 : x
  2. Step 2: Convert to fraction form
    386,249.40/580,030.20 = 286,522.20/x
  3. Step 3: Cross multiply
    386,249.40x = 580,030.20 × 286,522.20
  4. Step 4: Simplify right side
    386,249.40x = 166,191,528,970.44
  5. Step 5: Solve for x
    x = 166,191,528,970.44/386,249.40
  6. Step 6: Final answer
    x = 430,270.00

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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.