Home / 282,779.76-390,236.07-155,455.37

Finding the Fourth Proportional to 282,779.76, 390,236.07 and 155,455.37

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Solution

The fourth proportional to 282,779.76, 390,236.07 and 155,455.37 is: 214,528.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,779.76 : 390,236.07 = 155,455.37 : x
  2. Step 2: Convert to fraction form
    282,779.76/390,236.07 = 155,455.37/x
  3. Step 3: Cross multiply
    282,779.76x = 390,236.07 × 155,455.37
  4. Step 4: Simplify right side
    282,779.76x = 60,664,290,698.02
  5. Step 5: Solve for x
    x = 60,664,290,698.02/282,779.76
  6. Step 6: Final answer
    x = 214,528.40

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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.