Home / 282,386.40-389,667.84-155,059.20

Finding the Fourth Proportional to 282,386.40, 389,667.84 and 155,059.20

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Solution

The fourth proportional to 282,386.40, 389,667.84 and 155,059.20 is: 213,967.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,386.40 : 389,667.84 = 155,059.20 : x
  2. Step 2: Convert to fraction form
    282,386.40/389,667.84 = 155,059.20/x
  3. Step 3: Cross multiply
    282,386.40x = 389,667.84 × 155,059.20
  4. Step 4: Simplify right side
    282,386.40x = 60,421,583,536.13
  5. Step 5: Solve for x
    x = 60,421,583,536.13/282,386.40
  6. Step 6: Final answer
    x = 213,967.75

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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.