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Finding the Fourth Proportional to 247,898.64, 342,102.78 and 134,721.40

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Solution

The fourth proportional to 247,898.64, 342,102.78 and 134,721.40 is: 185,916.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,898.64 : 342,102.78 = 134,721.40 : x
  2. Step 2: Convert to fraction form
    247,898.64/342,102.78 = 134,721.40/x
  3. Step 3: Cross multiply
    247,898.64x = 342,102.78 × 134,721.40
  4. Step 4: Simplify right side
    247,898.64x = 46,088,565,465.49
  5. Step 5: Solve for x
    x = 46,088,565,465.49/247,898.64
  6. Step 6: Final answer
    x = 185,916.98

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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.