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Finding the Fourth Proportional to 385,476.32, 532,110.30 and 261,325.82

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Solution

The fourth proportional to 385,476.32, 532,110.30 and 261,325.82 is: 360,733.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,476.32 : 532,110.30 = 261,325.82 : x
  2. Step 2: Convert to fraction form
    385,476.32/532,110.30 = 261,325.82/x
  3. Step 3: Cross multiply
    385,476.32x = 532,110.30 × 261,325.82
  4. Step 4: Simplify right side
    385,476.32x = 139,054,160,477.95
  5. Step 5: Solve for x
    x = 139,054,160,477.95/385,476.32
  6. Step 6: Final answer
    x = 360,733.34

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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.