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Finding the Fourth Proportional to 478,667.88, 660,534.75 and 263,807.28

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Solution

The fourth proportional to 478,667.88, 660,534.75 and 263,807.28 is: 364,039.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,667.88 : 660,534.75 = 263,807.28 : x
  2. Step 2: Convert to fraction form
    478,667.88/660,534.75 = 263,807.28/x
  3. Step 3: Cross multiply
    478,667.88x = 660,534.75 × 263,807.28
  4. Step 4: Simplify right side
    478,667.88x = 174,253,875,742.98
  5. Step 5: Solve for x
    x = 174,253,875,742.98/478,667.88
  6. Step 6: Final answer
    x = 364,039.21

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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.