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Finding the Fourth Proportional to 287,029.86, 430,330.29 and 198,029.40

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Solution

The fourth proportional to 287,029.86, 430,330.29 and 198,029.40 is: 296,896.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,029.86 : 430,330.29 = 198,029.40 : x
  2. Step 2: Convert to fraction form
    287,029.86/430,330.29 = 198,029.40/x
  3. Step 3: Cross multiply
    287,029.86x = 430,330.29 × 198,029.40
  4. Step 4: Simplify right side
    287,029.86x = 85,218,049,130.53
  5. Step 5: Solve for x
    x = 85,218,049,130.53/287,029.86
  6. Step 6: Final answer
    x = 296,896.11

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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.