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Finding the Fourth Proportional to 255,618.30, 383,003.64 and 155,475.54

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Solution

The fourth proportional to 255,618.30, 383,003.64 and 155,475.54 is: 232,955.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,618.30 : 383,003.64 = 155,475.54 : x
  2. Step 2: Convert to fraction form
    255,618.30/383,003.64 = 155,475.54/x
  3. Step 3: Cross multiply
    255,618.30x = 383,003.64 × 155,475.54
  4. Step 4: Simplify right side
    255,618.30x = 59,547,697,750.97
  5. Step 5: Solve for x
    x = 59,547,697,750.97/255,618.30
  6. Step 6: Final answer
    x = 232,955.53

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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.