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Finding the Fourth Proportional to 510,751.31, 704,828.05 and 281,330.06

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Solution

The fourth proportional to 510,751.31, 704,828.05 and 281,330.06 is: 388,230.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    510,751.31 : 704,828.05 = 281,330.06 : x
  2. Step 2: Convert to fraction form
    510,751.31/704,828.05 = 281,330.06/x
  3. Step 3: Cross multiply
    510,751.31x = 704,828.05 × 281,330.06
  4. Step 4: Simplify right side
    510,751.31x = 198,289,313,368.72
  5. Step 5: Solve for x
    x = 198,289,313,368.72/510,751.31
  6. Step 6: Final answer
    x = 388,230.65

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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.