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Finding the Fourth Proportional to 228,465.17, 315,281.89 and 127,863.17

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Solution

The fourth proportional to 228,465.17, 315,281.89 and 127,863.17 is: 176,451.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,465.17 : 315,281.89 = 127,863.17 : x
  2. Step 2: Convert to fraction form
    228,465.17/315,281.89 = 127,863.17/x
  3. Step 3: Cross multiply
    228,465.17x = 315,281.89 × 127,863.17
  4. Step 4: Simplify right side
    228,465.17x = 40,312,941,898.99
  5. Step 5: Solve for x
    x = 40,312,941,898.99/228,465.17
  6. Step 6: Final answer
    x = 176,451.15

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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.