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Finding the Fourth Proportional to 289,908.72, 399,895.92 and 182,390.40

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Solution

The fourth proportional to 289,908.72, 399,895.92 and 182,390.40 is: 251,586.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,908.72 : 399,895.92 = 182,390.40 : x
  2. Step 2: Convert to fraction form
    289,908.72/399,895.92 = 182,390.40/x
  3. Step 3: Cross multiply
    289,908.72x = 399,895.92 × 182,390.40
  4. Step 4: Simplify right side
    289,908.72x = 72,937,176,807.17
  5. Step 5: Solve for x
    x = 72,937,176,807.17/289,908.72
  6. Step 6: Final answer
    x = 251,586.70

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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.