Home / 228,727.32-315,636.76-128,125.32

Finding the Fourth Proportional to 228,727.32, 315,636.76 and 128,125.32

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Solution

The fourth proportional to 228,727.32, 315,636.76 and 128,125.32 is: 176,809.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,727.32 : 315,636.76 = 128,125.32 : x
  2. Step 2: Convert to fraction form
    228,727.32/315,636.76 = 128,125.32/x
  3. Step 3: Cross multiply
    228,727.32x = 315,636.76 × 128,125.32
  4. Step 4: Simplify right side
    228,727.32x = 40,441,060,878.76
  5. Step 5: Solve for x
    x = 40,441,060,878.76/228,727.32
  6. Step 6: Final answer
    x = 176,809.05

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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.