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Finding the Fourth Proportional to 371,657.12, 512,602.79 and 320,063.58

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Solution

The fourth proportional to 371,657.12, 512,602.79 and 320,063.58 is: 441,443.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,657.12 : 512,602.79 = 320,063.58 : x
  2. Step 2: Convert to fraction form
    371,657.12/512,602.79 = 320,063.58/x
  3. Step 3: Cross multiply
    371,657.12x = 512,602.79 × 320,063.58
  4. Step 4: Simplify right side
    371,657.12x = 164,065,482,485.07
  5. Step 5: Solve for x
    x = 164,065,482,485.07/371,657.12
  6. Step 6: Final answer
    x = 441,443.14

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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.