Home / 282,689.46-390,111.66-155,365.02

Finding the Fourth Proportional to 282,689.46, 390,111.66 and 155,365.02

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Solution

The fourth proportional to 282,689.46, 390,111.66 and 155,365.02 is: 214,403.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,689.46 : 390,111.66 = 155,365.02 : x
  2. Step 2: Convert to fraction form
    282,689.46/390,111.66 = 155,365.02/x
  3. Step 3: Cross multiply
    282,689.46x = 390,111.66 × 155,365.02
  4. Step 4: Simplify right side
    282,689.46x = 60,609,705,858.13
  5. Step 5: Solve for x
    x = 60,609,705,858.13/282,689.46
  6. Step 6: Final answer
    x = 214,403.84

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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.