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Finding the Fourth Proportional to 351,072, 484,486.65 and 207,779.76

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Solution

The fourth proportional to 351,072, 484,486.65 and 207,779.76 is: 286,740.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,072 : 484,486.65 = 207,779.76 : x
  2. Step 2: Convert to fraction form
    351,072/484,486.65 = 207,779.76/x
  3. Step 3: Cross multiply
    351,072x = 484,486.65 × 207,779.76
  4. Step 4: Simplify right side
    351,072x = 100,666,519,860.20
  5. Step 5: Solve for x
    x = 100,666,519,860.20/351,072
  6. Step 6: Final answer
    x = 286,740.38

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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.