Home / 236,688.78-326,628.86-129,258.84

Finding the Fourth Proportional to 236,688.78, 326,628.86 and 129,258.84

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Solution

The fourth proportional to 236,688.78, 326,628.86 and 129,258.84 is: 178,376.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,688.78 : 326,628.86 = 129,258.84 : x
  2. Step 2: Convert to fraction form
    236,688.78/326,628.86 = 129,258.84/x
  3. Step 3: Cross multiply
    236,688.78x = 326,628.86 × 129,258.84
  4. Step 4: Simplify right side
    236,688.78x = 42,219,666,907.83
  5. Step 5: Solve for x
    x = 42,219,666,907.83/236,688.78
  6. Step 6: Final answer
    x = 178,376.29

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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.