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Finding the Fourth Proportional to 235,807.00, 325,420.47 and 128,378.86

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Solution

The fourth proportional to 235,807.00, 325,420.47 and 128,378.86 is: 177,166.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,807.00 : 325,420.47 = 128,378.86 : x
  2. Step 2: Convert to fraction form
    235,807.00/325,420.47 = 128,378.86/x
  3. Step 3: Cross multiply
    235,807.00x = 325,420.47 × 128,378.86
  4. Step 4: Simplify right side
    235,807.00x = 41,777,108,145.71
  5. Step 5: Solve for x
    x = 41,777,108,145.71/235,807.00
  6. Step 6: Final answer
    x = 177,166.53

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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.