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Finding the Fourth Proportional to 228,390.32, 342,500.28 and 78,588.24

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Solution

The fourth proportional to 228,390.32, 342,500.28 and 78,588.24 is: 117,853.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,390.32 : 342,500.28 = 78,588.24 : x
  2. Step 2: Convert to fraction form
    228,390.32/342,500.28 = 78,588.24/x
  3. Step 3: Cross multiply
    228,390.32x = 342,500.28 × 78,588.24
  4. Step 4: Simplify right side
    228,390.32x = 26,916,494,204.71
  5. Step 5: Solve for x
    x = 26,916,494,204.71/228,390.32
  6. Step 6: Final answer
    x = 117,853.04

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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.