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Finding the Fourth Proportional to 478,261.37, 660,030.53 and 263,401.38

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Solution

The fourth proportional to 478,261.37, 660,030.53 and 263,401.38 is: 363,510.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,261.37 : 660,030.53 = 263,401.38 : x
  2. Step 2: Convert to fraction form
    478,261.37/660,030.53 = 263,401.38/x
  3. Step 3: Cross multiply
    478,261.37x = 660,030.53 × 263,401.38
  4. Step 4: Simplify right side
    478,261.37x = 173,852,949,143.98
  5. Step 5: Solve for x
    x = 173,852,949,143.98/478,261.37
  6. Step 6: Final answer
    x = 363,510.33

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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.