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Finding the Fourth Proportional to 230,838.48, 318,555.76 and 128,858.04

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Solution

The fourth proportional to 230,838.48, 318,555.76 and 128,858.04 is: 177,823.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,838.48 : 318,555.76 = 128,858.04 : x
  2. Step 2: Convert to fraction form
    230,838.48/318,555.76 = 128,858.04/x
  3. Step 3: Cross multiply
    230,838.48x = 318,555.76 × 128,858.04
  4. Step 4: Simplify right side
    230,838.48x = 41,048,470,864.31
  5. Step 5: Solve for x
    x = 41,048,470,864.31/230,838.48
  6. Step 6: Final answer
    x = 177,823.35

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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.