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Finding the Fourth Proportional to 385,477.32, 532,111.68 and 261,326.82

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Solution

The fourth proportional to 385,477.32, 532,111.68 and 261,326.82 is: 360,734.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,477.32 : 532,111.68 = 261,326.82 : x
  2. Step 2: Convert to fraction form
    385,477.32/532,111.68 = 261,326.82/x
  3. Step 3: Cross multiply
    385,477.32x = 532,111.68 × 261,326.82
  4. Step 4: Simplify right side
    385,477.32x = 139,055,053,219.26
  5. Step 5: Solve for x
    x = 139,055,053,219.26/385,477.32
  6. Step 6: Final answer
    x = 360,734.72

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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.