Home / 385,316.09-578,060.25-185,804.28

Finding the Fourth Proportional to 385,316.09, 578,060.25 and 185,804.28

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Solution

The fourth proportional to 385,316.09, 578,060.25 and 185,804.28 is: 278,747.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,316.09 : 578,060.25 = 185,804.28 : x
  2. Step 2: Convert to fraction form
    385,316.09/578,060.25 = 185,804.28/x
  3. Step 3: Cross multiply
    385,316.09x = 578,060.25 × 185,804.28
  4. Step 4: Simplify right side
    385,316.09x = 107,406,067,851.10
  5. Step 5: Solve for x
    x = 107,406,067,851.10/385,316.09
  6. Step 6: Final answer
    x = 278,747.94

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.