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Finding the Fourth Proportional to 320,375.16, 482,725.35 and 265,437.72

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Solution

The fourth proportional to 320,375.16, 482,725.35 and 265,437.72 is: 399,948.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,375.16 : 482,725.35 = 265,437.72 : x
  2. Step 2: Convert to fraction form
    320,375.16/482,725.35 = 265,437.72/x
  3. Step 3: Cross multiply
    320,375.16x = 482,725.35 × 265,437.72
  4. Step 4: Simplify right side
    320,375.16x = 128,133,516,290.20
  5. Step 5: Solve for x
    x = 128,133,516,290.20/320,375.16
  6. Step 6: Final answer
    x = 399,948.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.