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Finding the Fourth Proportional to 474,666.40, 655,039.86 and 259,807.60

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Solution

The fourth proportional to 474,666.40, 655,039.86 and 259,807.60 is: 358,534.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    474,666.40 : 655,039.86 = 259,807.60 : x
  2. Step 2: Convert to fraction form
    474,666.40/655,039.86 = 259,807.60/x
  3. Step 3: Cross multiply
    474,666.40x = 655,039.86 × 259,807.60
  4. Step 4: Simplify right side
    474,666.40x = 170,184,333,930.94
  5. Step 5: Solve for x
    x = 170,184,333,930.94/474,666.40
  6. Step 6: Final answer
    x = 358,534.61

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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.